CN104677256A - Displacement sensor for implementing high-precision redundancy - Google Patents
Displacement sensor for implementing high-precision redundancy Download PDFInfo
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- CN104677256A CN104677256A CN201310653589.0A CN201310653589A CN104677256A CN 104677256 A CN104677256 A CN 104677256A CN 201310653589 A CN201310653589 A CN 201310653589A CN 104677256 A CN104677256 A CN 104677256A
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- feeler lever
- main casing
- circuit
- displacement transducer
- metering circuit
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- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The invention relates to a displacement sensor for implementing high-precision redundancy. The displacement sensor comprises a main body, a magnet and two probe rods, wherein circuit boards of two independent measurement circuits is arranged in the main body; axially-arranged waveguide wires and frameworks are respectively arranged at the interior of each probe rod; the waveguide wires are connected to the measurement circuits through excitation leads; coils are wound around the framework and are connected to the measurement circuits; a gap is formed between the two probe rods; magnets are mounted on the probe rods and can move along the axial directions of the probe rods. Through the displacement sensor, the effect of high-accuracy redundancy can be implemented.
Description
Technical field
The present invention relates to the technology of sensor, particularly relating to a kind of displacement transducer for realizing high precision redundancy.
Background technology
Magnetostrictive displacement sensor utilizes the Wiedemann of magnetostriction materials (Wiedeman) effect and prestige Larry (Villary) effect to come the absolute position of detected activity magnet to measure the non-cpntact measurement utensil of the actual displacement value of detected product, there is high resolving power, high linearity, the remarkable advantages such as the output of absolute magnitude position signalling and degree of protection high (IP69), can meet the demand of most production scene.
On-the-spot at some special operations, bad environments, easily causes sensor degradation, needs to install multiple sensor and realizes redundancy.But multiple displacement transducer is installed, not only expensive, and install inconvenient.Therefore wish to propose a kind of displacement transducer, when a measurement group is damaged, other measurement groups can still work, and not interrupt spot operation.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of displacement transducer, makes can realize high precision redundancy when measuring.
The technical solution adopted for the present invention to solve the technical problems is: providing a kind of displacement transducer for realizing high precision redundancy, comprising: main body, magnet and feeler lever,
Described main body has main casing, lower cover, holder, metering circuit, described main casing has two interfaces; Described metering circuit has two groups, is placed on two pieces of circuit boards, and described two pieces of circuit boards, perpendicular to main casing axis, are parallelly built in main casing inside, by bolt be fixed in holder and under cover, be stamped two through holes under described in order to through feeler lever;
Described feeler lever has two groups, has gap between two groups, often organizes and comprises a skeleton respectively, an inductive coil, a shielded tube, a waveguide filament, an excitation wire, conductive strips, a damper, a fixed block; Described skeleton is wound with inductive coil, and sheathed shielded tube, described inductive coil is electrically connected by conductive strips and metering circuit; Described waveguide filament is axially positioned over feeler lever inside, and be electrically connected by excitation wire and metering circuit, described waveguide filament is connected by fixed block at feeler lever afterbody with excitation wire, and damper is housed;
Described magnet has two mesopores, and the gap of two mesopores is equal with the distance between two feeler levers, and described magnet can along feeler lever axially-movable;
Conductive strips (11a) on described feeler lever (2a) are connected with the circuit board (6a) that metering circuit is housed, and form the first measurement group; Conductive strips (11b) on described feeler lever (2b) connect to form the second measurement group with the circuit board (6b) that metering circuit is housed.
Further, described waveguide filament periphery is arranged with little flexible pipe, also sheathed large flexible pipe outside little flexible pipe.
Further, described main casing is equipped with two LED, shows the state of two metering circuits respectively.
Further, described two pieces of circuit boards are parallel to main casing axis being parallel and are placed in main casing.
Further, between described two pieces of circuit boards, separating means is housed.
Have employed above-mentioned technical scheme, displacement transducer for realizing redundancy provided by the invention, compared with prior art, there is following advantage and good effect: the present invention can realize the function of redundancy in specific workplace, when a measurement group is destroyed, do not affect the normal operation of another measurement group, and there is between the feeler lever of two measurement groups the interference that certain distance can prevent signal between assembly, reach measuring accuracy high, and the object of redundancy can be realized.
Accompanying drawing explanation
Fig. 1 is stereographic map of the present invention
Fig. 2 is exploded perspective figure of the present invention
Fig. 3 is the exploded perspective figure of feeler lever of the present invention
Fig. 4 is the cut-open view of second embodiment of the invention
Embodiment
Below in conjunction with specific embodiment, set forth the present invention further.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.In addition should be understood that those skilled in the art can make various changes or modifications the present invention after having read content of the present invention, these equivalent form of values fall within the application's appended claims limited range equally.
The present invention relates to a kind of displacement transducer for realizing redundancy, as shown in Figure 1:
Comprise: main body (1), magnet (3) and feeler lever (2a, 2b),
Described main body (1) has main casing (1), lower cover (10), holder (9), and metering circuit described main casing (1) has two interfaces (5a, 5b); Described metering circuit has two groups, be placed in two pieces of circuit board (6a, 6b), described two pieces of circuit boards are built in main casing inside perpendicular to main casing axis being parallel, be fixed on holder (9) and lower cover (10) by bolt (8), described lower cover (10) has two through holes in order to pass feeler lever.
Described feeler lever has two groups (2a, 2b), has gap between two groups, often organize and comprise respectively, as shown in Figure 4, a skeleton (20b), an inductive coil (19b), a shielded tube (12b), a waveguide filament (14b), an excitation wire (15b), a conductive strips (11b), a damper (16b), a fixed block (17b); Described skeleton is wound with inductive coil (19b), and sheathed shielded tube (12b), described inductive coil (19b) is electrically connected by conductive strips (11b) and metering circuit; Described waveguide filament (14b) is axially positioned over feeler lever inside, be electrically connected by excitation wire (15b) and metering circuit, described waveguide filament (14b) is connected by fixed block (17b) at feeler lever afterbody with excitation wire (15b), and damper (16b) is housed.
Described magnet has two mesopores (22a, 22b), the gap of two mesopores and two feeler levers (2a, 2b)) between distance equal, described magnet (3) can along feeler lever (2a, 2b) axially-movable.
Conductive strips (11a) on described feeler lever (2a) are by feeler lever (2a) induced inside coil, and the excitation wire connecting waveguide filament connects to form the first measurement group with the circuit board (6a) that metering circuit is housed.
Conductive strips (11b) on described feeler lever (2b) are by feeler lever (2b) induced inside coil, and the excitation wire connecting waveguide filament connects to form the second measurement group with the circuit board (6b) that metering circuit is housed.
Further, described waveguide filament periphery is arranged with little flexible pipe (21b), little flexible pipe (21b) outside also sheathed large flexible pipe (13b).
Further, described main casing is equipped with two LED (4a, 4b), shows the state of two metering circuits respectively.
As shown in Figure 4, another embodiment provided by the present invention, two pieces of circuit boards can be parallel to that main casing is parallel to be placed in main casing (1).
Further, between described two pieces of circuit boards, separating means (23) is housed.
The operation steps realizing the displacement transducer of high progress redundancy provided by the invention is: connect two measurement group power supplys respectively by interface, waveguide filament and coil power on respectively, measured object moves along with magnet on feeler lever, according to magnetostriction principle, the displacement of coil-induced magnet, transfer signals to metering circuit, displacement signal is converted to shift value by metering circuit, is transferred to external fetch equipment by interface.When under particular job environment, the feeler lever of one of them measurement group destroys by unexpected external force, do not affect the work of another measurement group, and between two measurement groups, there is gap, reduce by the risk destroyed simultaneously, weaken signal disturbing between two measurement groups, really realize the object of high precision redundancy.
In another embodiment provided by the invention, two metering circuit plates are parallel to main casing axis being parallel to place, different measurement size of main body and as requested can be satisfied with, and separate with separating means between two metering circuit plates, realize the object of noiseless redundancy further.
Often organizing metering circuit is prior art.
Be not difficult to find, displacement transducer for realizing redundancy of the present invention can not affected another measurement group and works under equal working condition when a measurement group destroys, and there is between measurement feeler lever certain distance also can reduce the risk that two measurement groups are destroyed simultaneously, and effectively prevent the interference of measuring-signal, realize high precision redundancy.
Should be understood that, the foregoing is only better embodiment of the present invention, not in order to limit the scope of the invention.For those of ordinary skills, any amendment done according to the above description, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. for realizing a displacement transducer for redundancy, comprising: main body, magnet and feeler lever, is characterized in that:
Described main body has main casing, lower cover, holder, metering circuit, described main casing has two interfaces; Described metering circuit has two groups, is placed on two pieces of circuit boards, and described two pieces of circuit boards, perpendicular to main casing axis, are parallelly built in main casing inside, by bolt be fixed in holder and under cover, be stamped two through holes under described in order to through feeler lever;
Described feeler lever has two groups, has gap between two groups, often organizes and comprises a skeleton respectively, an inductive coil, a shielded tube, a waveguide filament, an excitation wire, conductive strips, a damper, a fixed block; Described skeleton is wound with inductive coil, and sheathed shielded tube, described inductive coil is electrically connected by conductive strips and metering circuit; Described waveguide filament is axially positioned over feeler lever inside, and be electrically connected by excitation wire and metering circuit, described waveguide filament is connected by fixed block at feeler lever afterbody with excitation wire, and damper is housed;
Described magnet has two mesopores, and the gap of two mesopores is equal with the distance between two feeler levers, and described magnet can along feeler lever axially-movable;
Conductive strips (11a) on described feeler lever (2a) are connected with the circuit board (6a) that metering circuit is housed, and form the first measurement group; Conductive strips (11b) on described feeler lever (2b) connect to form the second measurement group with the circuit board (6b) that metering circuit is housed.
2. the displacement transducer for realizing redundancy according to claim 1, is characterized in that: described waveguide filament periphery is arranged with little flexible pipe, also sheathed large flexible pipe outside little flexible pipe.
3. the displacement transducer for realizing redundancy according to claim 1, is characterized in that: described main casing is equipped with two LED, shows the state of two metering circuits respectively.
4. the displacement transducer for realizing redundancy according to claim 1, is characterized in that: described two pieces of circuit boards are parallel to main casing axis being parallel and are placed in main casing.
5. the displacement transducer for realizing redundancy according to claim 4, is characterized in that: between described two pieces of circuit boards, separating means is housed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310653589.0A CN104677256A (en) | 2013-11-29 | 2013-11-29 | Displacement sensor for implementing high-precision redundancy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310653589.0A CN104677256A (en) | 2013-11-29 | 2013-11-29 | Displacement sensor for implementing high-precision redundancy |
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| Publication Number | Publication Date |
|---|---|
| CN104677256A true CN104677256A (en) | 2015-06-03 |
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| CN201310653589.0A Pending CN104677256A (en) | 2013-11-29 | 2013-11-29 | Displacement sensor for implementing high-precision redundancy |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106023500A (en) * | 2016-06-29 | 2016-10-12 | 孙建华 | Biological induction perimeter and using method thereof |
| CN112710218A (en) * | 2020-12-15 | 2021-04-27 | 北京特倍福电子技术有限公司 | Compact redundant built-in magnetostrictive displacement sensor |
-
2013
- 2013-11-29 CN CN201310653589.0A patent/CN104677256A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106023500A (en) * | 2016-06-29 | 2016-10-12 | 孙建华 | Biological induction perimeter and using method thereof |
| CN112710218A (en) * | 2020-12-15 | 2021-04-27 | 北京特倍福电子技术有限公司 | Compact redundant built-in magnetostrictive displacement sensor |
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Application publication date: 20150603 |
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