CN106019185A

CN106019185A - Inductor

Info

Publication number: CN106019185A
Application number: CN201610434464.2A
Authority: CN
Inventors: 冯耀依
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-06-19
Filing date: 2016-06-19
Publication date: 2016-10-12

Abstract

The invention relate to an inductor capable of detecting a magnetic conducting object. According to the inductor, the existence or position of a detected object is detected by using the magnetic conductivity of the detected object, or whether the object has magnetic conductivity can be identified; and switching quantity signals are emitted. The inductor is composed of an inductive probe and an electronic circuit, wherein the inductive probe is ring-shaped. The inductor can be understood in accordance with a ring-shaped proximity switch.

Description

Induction apparatus

Technical field

The induction apparatus of the present invention belongs to mechano-electronic field.

Background technology

Annular proximity switch in the market typically can only detect metal object through non-metallic pipe, and the induction apparatus of the present invention can detect magnetic conductivity object through non-magnetic metal tube.

Summary of the invention

A kind of induction apparatus of invention, is used for detecting magnetic conductivity object.This induction apparatus can detect magnetic conductivity object existence or position, or be used for differentiate whether object has magnetic conductivity.

This induction apparatus is connected an electronic circuit by an annular probe and forms.This induction apparatus can send corresponding on-off model according in the middle of its annular probe with or without magnetic conductivity object.

The probe of this induction apparatus is mainly made up of two coils, dividing plate and shell.Two coils and dividing plate is the most stacked together and dividing plate is between two coils.Coil and dividing plate composition one assembly, casing the two ends of this assembly and around.There is a hole centre of two coils and dividing plate, and the most porose in the middle of the two ends of shell, this some holes is all directed at, and these unit constructions are packaged together and just constitute an annulus, here it is the probe of the induction apparatus of the present invention.Its median septum and shell all make of permeability magnetic material.It is to say, the probe of this induction apparatus to have employed the dividing plate that the porose magnetic conductive material of two coils and centre makes the most stacked together, and dividing plate is between two coils.

Two coils in the probe of this induction apparatus, one as induction coil, another is as excitation coil.Because dividing plate and shell all make of permeability magnetic material.The shell that so induction coil, excitation coil and dividing plate one assembly of composition, these assembly two ends and surrounding make of permeability magnetic material constitutes closed magnetic path.

Each coil in probe is drawn both threads and is passed shell.An electronic circuit received by these four lines drawing shell.This electronic circuit is amplified and rectification unit by AC signal occurring source unit, exchange, voltage comparison unit, voltage setting value unit, switch amount output unit, and power subsystem forms.That is the electronic circuit ingredient of the whole induction apparatus including two coils has: induction coil assembly, excitation coil unit, AC signal occurring source unit, exchange is amplified and rectification unit, voltage comparison unit, voltage setting value unit, switch amount output unit, power subsystem.

The electronic circuit operation principle of this induction apparatus.By external power source to power electronics.The unit that each in electronic circuit is needed after processing by the power supply that outside is sent here by power subsystem is powered.In electronic circuit, AC signal source unit sends the stable AC signal in a road to the excitation coil unit in probe.Induction coil assembly in probe can induce voltage signal, and the size of this voltage signal induced is relevant with or without magnetic conductivity object in the middle of probe.In the voltage signal that induction coil assembly induces gives electronic circuit, exchange is amplified and rectification unit；Exchange is amplified, with rectification unit, this signal processing is become corresponding voltage signal in electronic circuit；The voltage setting value that this voltage signal is previously set with voltage setting value unit compares size in voltage comparison unit, comparative result gives switch amount output unit, and switch amount output unit externally exports a corresponding on-off model according to the result after comparing.

Using method: the object that is magnetic inserts in the middle of the annular probe of induction apparatus, and the electronic circuit of induction apparatus is issued by an on-off model；Not having magnetic bodies to insert in the middle of the annular probe of induction apparatus, the electronic circuit of induction apparatus is issued by a contrary on-off model.

Accompanying drawing illustrates:

Fig. 1 is the probe top view of induction apparatus.Fig. 2 is the profile of line A-A along Fig. 1.Fig. 3 is the electronic circuit block diagram of induction apparatus, and is the electronic circuit block diagram of the whole induction apparatus comprising two coils in probe.

In Fig. 1,1 is probe interstitial hole.In Fig. 2,1 is probe interstitial hole, and 2 is induction coil, and 3 is excitation coil, and 4 is dividing plate, and 5 is shell.In Fig. 3,6 is induction coil assembly, and 7 is excitation coil unit, and 8 is that exchange is amplified and rectification unit, and 9 is AC signal source unit, and 10 is voltage comparison unit, and 11 is voltage setting value unit, and 12 is switch amount output unit, and 13 is power subsystem.

Detailed description of the invention:

The making of the probe of induction apparatus.Fig. 2 is the cross-sectional view of probe.Dividing plate 4 and shell 5 in probe all make of permeability magnetic material.Induction coil 2 and excitation coil 3 are all the coils of an enameled conducting wire coiling.Dividing plate 4 is the platelet that a centre is porose.Together with induction coil 2, excitation coil 3 are axially stacked with dividing plate 4, and dividing plate 4 is between induction coil 2 and excitation coil 3.Surrounding and the two ends of the assembly of induction coil 2, excitation coil 3 and dividing plate 4 composition are with shell 5 big envelope.In the middle of the both ends of the surface of shell 5 the most porose.The hole of induction coil 2, excitation coil 3 and dividing plate 4 and shell 5 all aligns, and thus constitutes a ring.For the needs assembled, shell 5 can first make two parts or a few part the most altogether.The hole that the lead-in wire for induction coil 2 and excitation coil 3 passes is also had on shell 5.Induction coil 2 and excitation coil 3 are respectively drawn both threads and are passed shell 5.In this ring, i.e. the inwall of probe interstitial hole 1 can also add protection sleeve pipe, and whole probe can be encapsulated with glue.So ultimately form a porose ring in centre and with four electrically conductive lead-in wires, here it is the probe of the induction apparatus of the present invention.

The explanation of the electronic circuit of induction apparatus.Fig. 3 is the electronic circuit block diagram containing in probe two coils at interior whole induction apparatus.Power subsystem 13 accepts externally fed.The unit that each in the electronic circuit of induction apparatus is needed after processing by the power supply that outside is sent here by power subsystem 13 is powered.AC signal source unit 9 sends stable AC signal and exports excitation coil unit 7.Induction coil assembly 6 induces voltage signal, and this signal and be transported to exchange and amplify and rectification unit 8.Exchange is amplified the signal received with rectification unit 8 and is carried out exchanging amplification and rectification, then the voltage signal after process is transported to voltage comparison unit 10.Voltage setting value unit 11 produces the magnitude of voltage being previously set, and this magnitude of voltage is also transported to voltage comparison unit 10.Voltage comparison unit 10 carries out hysteresis from two magnitudes of voltage exchanging amplification and rectification unit 8 and voltage setting value unit 11 and compares, and then 10 comparative results of voltage comparison unit export switch amount output unit 12.The result that switch amount output unit 12 comes according to voltage comparison unit 10 conveying externally exports the corresponding contact point signal being opened or closed.

Operating principle: excitation coil unit 7 sends stable alternating magnetic field, makes induction coil assembly 6 produce induced voltage signal.It is relevant with or without magnetic conductivity object in the middle of probe that induction coil assembly 6 induces voltage signal size, induction coil assembly 6 induces voltage signal size and determines that exchange is amplified and the voltage swing of rectification unit 8 output, and then affects the comparative result of voltage comparison unit 10.The comparative result of voltage comparison unit 10 decides the output result of switch amount output unit 12.So switch amount output unit 12 externally exports the contact point signal that is opened or closed just and probe centre is the most corresponding with or without magnetic conductivity object.

Claims

1. an induction apparatus, it is made up of annular probe and electronic circuit, electronic circuit externally sends corresponding on-off model according in the middle of annular probe with or without magnetic conductivity object, including: induction coil (2), excitation coil (3), dividing plate (4), shell (5), the electronic circuit being connected with induction coil (2) and excitation coil (3)；It is characterized in that: the dividing plate (4) that probe have employed the porose magnetic conductive material making in induction coil (2), excitation coil (3) and centre is axially stacked together, and dividing plate (4) is between induction coil (2) and excitation coil (3).

Induction apparatus the most according to claim 1, is characterized in that: induction coil (2), and excitation coil (3) and dividing plate (4) one assembly of composition, the shell (5) that these assembly two ends and surrounding make of permeability magnetic material constitutes closed magnetic path.

Induction apparatus the most according to claim 1, it is characterized in that: the electronic circuit ingredient of whole induction apparatus has: induction coil assembly (6), excitation coil unit (7), exchange is amplified and rectification unit (8), AC signal occurring source unit (9), voltage comparison unit (10), voltage setting value unit (11), switch amount output unit (12), power subsystem (13).