CN205506076U - Three parameter sensors of angle / displacement / magnetic conductivity - Google Patents

Abstract

The utility model provides a three parameter sensors of angle / displacement / magnetic conductivity of based on exchangeable principle. The device includes primary coil, secondary coil, corner controlling means, displacement controlling means, sample cell, base etc. Utilize dimensional orientation that corner controlling means changes the secondary coil contained angle of former secondary coil promptly, or utilize position that displacement controlling means the changes primary coil interval of former secondary coil promptly, or with sample cell along the magnetic conductivity that changes primary coil during primary coil is put into to the axis direction, loading alternating current signal on primary coil, the state of three kind above -mentioned differences all can bring out vice the coil induction voltage emergence linear change. Through the real -time change of measuring vice the coil induction voltage, can realize respectively that the dynamic change of angle, displacement or magnetic conductivity measures. The utility model discloses a sensor structure is simple, and it is convenient to maintain, the linearity is high, the good reproducibility, but just measure angle, displacement, the three parameter of magnetic conductivity.

Description

A kind of angle/displacement/pcrmeability three parameter sensors

Technical field

This utility model relates to a kind of angle/displacement/pcrmeability three parameter sensors, especially suitable disturb without harsh electromagnetic and need to move The measurement environment of state response.

Background technology

The kind of the most commercial angular transducer is the most various, potentiometer type, condenser type, photopotentiometer formula and raster pattern.Whole Body can be divided into contact and contactless two kinds.Potentiometer type is the contact type angle sensor that technology is the most ripe.Because of contact Work certainly exists friction, thus wear no resistance, resolution low, response speed is the shortcoming that it is fatal slowly.In needs quickly response Measurement environment in, it is necessary to use contactless working method.Condenser type, photopotentiometer formula and raster pattern are noncontact Formula works.Capacitance type sensor output impedance is high, and carrying load ability is poor, and once operating frequency equal or close to resonant frequency, Electric capacity will be unable to normally work, and limits its range to a certain extent.The photopotentiometer formula life-span is long, and certainty of measurement is high, But need to measure scope little in conjunction with high impedance matched transform device when using, greatest drawback is poor linearity, even less than 1%.For For raster pattern, limited strip of light width limits its range of application, and when using, existence needs shielding, high to environmental requirement Drawback.

The most commercial displacement transducer is in the majority with inductance type, condenser type and laser type three class sensor.Inductance type and condenser type are surveyed Accuracy of measurement is high, but the scope of measurement is little, and directivity is poor；There is harm in the measurement source of laser type, and cost of manufacture is high to human body.

Meanwhile, no matter angle or displacement transducer, is all the sensing measurement of single parameter, it is impossible to the sensing realizing multiparameter is surveyed Amount.

Up to now, also there is no a kind of sensor device, it is possible to achieve angle, displacement and three parameters of pcrmeability linear and fast Speed is measured.

Utility model content

For above-mentioned deficiency, this utility model provides a kind of angle/displacement/pcrmeability three parameter fast response transducer.

The sensor that this utility model relates to, based on being called two os of primary coil and secondary coil, comprises: former line Circle, secondary coil, guide rail, position control, angle controller, sample cell etc..

The technical solution of the utility model is: former and deputy two Coil Coaxials are placed.Angle controller is connected to secondary coil；Guide rail Forming displacement control device with position control, wherein position control is arranged on guide rail, and is connected with primary coil, and position is adjusted Joint device controls primary coil and moves along guide rail；Testing medium rod is inserted in primary coil；Angle controller changes the space side of secondary coil The most former secondary coil in position angle on horizontal axis, or utilize position control to change the most former secondary coil in position axial of primary coil Spacing, or the sample cell of good seal is inserted in primary coil in the axial direction the pcrmeability changing primary coil；Load on primary coil and hand over Stream electricity, above-mentioned three kinds of different states all can induce secondary coil induced voltage generation linear change；By measuring secondary coil faradism The real-time change of pressure, can realize the dynamic measure of the change of angle, displacement or pcrmeability respectively.

The beneficial effect that this utility model realizes:

(1) single device realizes angle, displacement, pcrmeability three-parameter measuring.

(2) it is easy to data acquisition, it is easy to accomplish angle, the kinetic measurement of displacement.

(3) measurement result highly linearized.

(4) simple in construction, easy to maintenance.

Accompanying drawing explanation

With embodiment, this utility model is further illustrated below in conjunction with the accompanying drawings.

Fig. 1 is a kind of angle/displacement/pcrmeability three parameter sensors structure chart of the present utility model.

In Fig. 1,1. secondary coil, 5. primary coil, 4. iron core, 10. sample cell, 6. connecting rod, 3. angle controller, 7. base, 8. guide rail, 9. position control.

Fig. 2 is the induced voltage measured curve with two coil axis variable angle.

Fig. 3 is the induced voltage measured curve with two coil axis distance changes.

Fig. 4 is the pcrmeability measured curve that induced voltage changes with analog sample.

Detailed description of the invention

1. angle/displacement/pcrmeability three parameter sensors

A kind of angle/displacement/pcrmeability three parameter sensors, as shown in Figure 1.

Guide rail 8, angle controller 3 are fixed on base 7, and guide rail 8 is placed along primary coil central axis direction, pre-adjust Primary coil 5 and secondary coil 1 are coaxial.Secondary coil 1 is connected with angle controller 3, by angle controller by connecting rod 6 3 drive secondary coil 1 to do fixed-axis rotation around connecting rod 6；Primary coil 5 is connected to position control 9 by connecting rod 6, solid afterwards Being scheduled on guide rail 8, position control 9 drives connecting rod 6 and primary coil 5 to move along guide rail 8, changes the axle of former and deputy coil To spacing, or angle controller 3 is utilized to change the most former and deputy coil of dimensional orientation of secondary coil 1 angle in datum plane, Or the sample cell 10 of good seal inserted the pcrmeability changing primary coil in primary coil 5；Primary coil 5 adds alternating voltage, secondary Induced voltage on coil 1 all can occur linear change, can realize displacement or angle or the measurement of three parameters of pcrmeability respectively.

As one optimization, it is built into iron core at primary coil 5 and secondary coil 1, increases the mutual inductance of sensor, improve sensitive Degree.For the sake of flexibly, only iron core is built into regard to a coil and also can reach to improve the purpose of mutual inductance.

As one optimization, sensor on-load voltage end is in secondary coil 1, and measures end and be positioned on primary coil 5.

Fig. 2 is the induced voltage that records of the experiment relation curve with two coil axis angles, in the range of showing that angle is 0～90 °, Induced voltage presents linear change, and degree of fitting, up to 0.99859, demonstrates this utility model and has angle sensor 0～90 ° of scope Ability.

Fig. 3 be the induced voltage that records of experiment with the relation curve of two coil-spans, show that two coil-spans are 15～65mm scopes, Induced voltage presents linear change, and degree of fitting, up to 0.98717, demonstrates this utility model and has the ability of displacement sensing simultaneously, Displacement sensing is in the range of 50mm.

Experiment has made the analog sample of a series of iron powder, to obtain different pcrmeability, places a sample into the thin of band sealing-plug afterwards Pipe, is placed in primary coil, measures the change curve of induced voltage as shown in Figure 4.Show that induced voltage is with relative permeability line Property increase, the linearity is 0.988, demonstrate this utility model have simultaneously pcrmeability sensing ability.

Claims (2)

1. angle/displacement/pcrmeability three parameter sensors, including displacement control device, angle controller, sample cell, guide rail, base, it is characterised in that device also comprises former and deputy two coils of axis collinear；Angle controller is connected with secondary coil, and makes it do fixed-axis rotation around vertical axes, to change the angle of two coils；Displacement control device comprises guide rail and position control, and guide rail is parallel with primary coil axis direction, and position control is arranged on guide rail, and is connected with primary coil, drives it to move along guide rail direction, to change the spacing of two coils；Sample cell seals testing sample, inserts primary coil, change its pcrmeability.

2. a kind of angle/displacement/pcrmeability three parameter sensors as claimed in claim 1, it is characterised in that insert iron core in vacant former and deputy coil.