CN203364848U

CN203364848U - Rotary self-power magneto-electric multi-ring absolute value encoder based on Wiegand effect

Info

Publication number: CN203364848U
Application number: CN 201320380889
Authority: CN
Inventors: 黄奎; 王斌; 李永华
Original assignee: YICHANG SENCAT ELECTRIC Co Ltd
Current assignee: Hubei Yingfang Technology Co ltd
Priority date: 2013-06-29
Filing date: 2013-06-29
Publication date: 2013-12-25
Anticipated expiration: 2023-06-29

Abstract

The utility model relates to a rotary self-power magneto-electric multi-ring absolute value encoder based on a Wiegand effect. The rotary self-power magneto-electric multi-ring absolute value encoder comprises a casing, wherein the casing is internally provided with a fixing frame, two magnetic steels are fixed on the fixing frame, the fixing frame is connected with a rotation shaft, a circuit board is above the magnetic steels, the two magnetic steels respectively realizes thickness magnetizing, an N pole of one magnetic steel is placed to face upwards, and an S pole of the other magnetic steel is placed to face upwards. According to the rotary self-power magneto-electric multi-ring absolute value encoder based on the Wiegand effect, no cell is additionally needed, electric energy can be generated only through rotation of the rotation shaft, and a voltage pulse can be further taken as a direction indicator of change of a magnetic pole. Compared with a mechanical absolute value encoder, the rotary self-power magneto-electric multi-ring absolute value encoder based on the Wiegand effect has advantages of simple structure, no gear wearing, small motion resistance and low cost. The rotary self-power magneto-electric multi-ring absolute value encoder based on the Wiegand effect does not depend on the cell, so the rotary self-power magneto-electric multi-ring absolute value encoder based on the Wiegand effect further has properties of no chemical corrosion, no environment pollution, no self-discharge electricity, maintenance-free performance and long service life.

Description

Rotation self-powered magneto-electric multi-turn absolute value encoder based on Wei root effect

Technical field

The utility model relates to a kind of absolute value encoder, is specifically related to a kind of rotation self-powered magneto-electric multi-turn absolute value encoder based on Wei root effect.

Background technology

Whether the multi-turn absolute value encoder is by dividing with battery, generally can be divided into two kinds, a kind of is the scrambler without battery of counting with gear, it is characterized in that: scrambler inside is without battery, adopt the physical construction such as gear to record mechanical location, the gamut mechanical location is absolute, with whether power irrelevant, complicated structure, cost is also higher; Another kind is the scrambler that adopts battery to record to count, feature is: comprise battery in scrambler, when scrambler without when power supply, adopt internal cell to power to record mechanical location, absolute value in individual pen, work as running down of battery, encoder data is lost, this coder structure is relatively simple, and cost is also lower, but battery life is limited, change trouble.

Summary of the invention

For the deficiencies in the prior art, the purpose of this utility model is to provide a kind of based on Wei root effect, does not need the rotation self-powered magneto-electric multi-turn absolute value encoder of external cell.

The purpose of this utility model is achieved in that a kind of rotation self-powered magneto-electric multi-turn absolute value encoder based on Wei root effect, comprise housing, be provided with fixed mount in housing, two blocks of magnet steel are fixed on fixed mount, fixed mount is connected with rotating shaft, and circuit board is positioned at the magnet steel top.

Described two blocks of magnet steel are thickness and magnetize, and the N magnetic pole of a slice magnet steel is upwards placed, and the S magnetic pole of another sheet magnet steel is upwards placed.

Further, Wiegand sensor, interface circuit are positioned at the one side of circuit board, and Hall angular position sensor, fpga chip, ferroelectric memory, single-chip microcomputer are positioned at the another side of circuit board.

In described circuit board, comprise the rectification filtering voltage stabilizing circuit and the shaping circuit that are connected with Wiegand sensor, shaping circuit is connected with ferroelectric memory with fpga chip respectively; The power supply of rectification filtering voltage stabilizing circuit outputs to shaping circuit, fpga chip and ferroelectric memory; Ferroelectric memory is connected with machine, and single-chip microcomputer is connected with interface circuit with the Hall angular position sensor respectively with respectively; The second mu balanced circuit is connected with ferroelectric memory, single-chip microcomputer, interface circuit and Hall angular position sensor respectively.

The rotation self-powered magneto-electric multi-turn absolute value encoder based on Wei root effect that the utility model provides, utilized the electricity generate function that Wiegand sensor has to provide power supply for scrambler, adopt the technical program, without adding packed battery, as long as rotating shaft is rotated, just can produce electric energy, and potential pulse can also be as the direction of magnetic pole change.With respect to the mechanical type absolute value encoder, the utility model is simple in structure, the gearless wearing and tearing, and the resistance of motion is little, and cost is low.Owing to not relying on battery, without chemical corrosion and contaminated environment, without self discharge, Maintenance free, long service life.

The accompanying drawing explanation

Below in conjunction with drawings and Examples, the utility model is described in further detail.

Fig. 1 is structural representation of the present utility model.

Fig. 2 is stereographic map of the present utility model.

Fig. 3 is the utility model circuit board top schematic diagram.

Fig. 4 is the utility model circuit board bottom schematic diagram.

Fig. 5 is circuit theory diagrams of the present utility model.

Embodiment

Structure of the present utility model is as Figure 1-4: a kind of rotation self-powered magneto-electric multi-turn absolute value encoder based on Wei root effect, comprise housing 5, be provided with 2, two blocks of magnet steel 1 of fixed mount and be fixed on fixed mount 2 in housing 5, fixed mount 2 is connected with rotating shaft 3, and circuit board 4 is positioned at magnet steel 1 top.Described two blocks of magnet steel 1 are thickness and magnetize, and the N magnetic pole of a slice magnet steel 1 is upwards placed, and the S magnetic pole of another sheet magnet steel 1 is upwards placed.

Wiegand sensor 6 of the present utility model, interface circuit 11 are positioned at the one side of circuit board 4, and Hall angular position sensor 7, fpga chip 8, ferroelectric memory 9, single-chip microcomputer 10 are positioned at the another side of circuit board 4.

Fpga chip 8 can be selected ACTEL A3PN010 or other similar chips; Single-chip microcomputer 10 can be selected ATMEL MEGA88PA or other similar single-chip microcomputers.

Comprise rectification filtering voltage stabilizing circuit and the shaping circuit be connected with Wiegand sensor 6 on circuit board 4 of the present utility model, shaping circuit is connected with ferroelectric memory 9 with fpga chip 8 respectively; The power supply of rectification filtering voltage stabilizing circuit outputs to shaping circuit, fpga chip 8 and ferroelectric memory 9; Ferroelectric memory 9 is connected with single-chip microcomputer 10, and single-chip microcomputer 10 is connected with interface circuit 11 with Hall angular position sensor 7 respectively with respectively; The second mu balanced circuit is connected with ferroelectric memory 9, single-chip microcomputer 10, interface circuit 11 and Hall angular position sensor 7 respectively.

Principle of work of the present utility model is as follows:

Wiegand sensor 6 is the magneto-dependent sensors that utilize Wei root effect to develop, Wiegand sensor 6 is fixed on circuit board 4, the suitable distance apart from magnet steel 1, according to Wiegand sensor characteristic and magnet steel intensity difference, need between 1-20mm, finely tune, when 1 rotation of drive magnet steel is rotated in rotating shaft 3, Wiegand sensor 6 outer alternating magnetic fields will change, when on the B alloy wire of Wiegand sensor 6 inside, effect has suitable external magnetic field, inner core magnetization saltus step, magnetic test coil just can be exported the induced potential pulse, even in the situation that also can produce reliable signal close to zero slow circumvolve, rotating shaft 3 often rotates a circle, exportable two pulse signals of Wiegand sensor 6, phase place difference according to pulse signal, the distinguishable direction that goes out rotating shaft 3 rotations.This pulse is after overcommutation, filtering, voltage stabilizing, out-put supply 1 does the power supply supply to the components and parts on circuit board 4 on the one hand, this pulse is after shaping circuit on the other hand, access fpga chip 8, as the scrambler sense of rotation, indicate, fpga chip 8, according to the sense of rotation of pulse judgement rotating shaft, counts rotating shaft 3 rotating cycles in FeRAM memory chip 9.

Hall angular position sensor 7 is arranged in the formed magnetic circuit of magnet steel 1, and it can induce the absolute angular position in 0-360 degree scope by the magnetic field parallel with chip surface, and Hall angular position sensor chip 7 is connected with single-chip microcomputer 10.Hall angular position sensor 7 is positioned at the ad-hoc location of circuit board (according to chip type selecting difference, may or be parallel to Wiegand sensor 6 perpendicular to Wiegand sensor 6, in the time of Hall angular position sensor 7 output 0 degree, Wiegand sensor 6 just in time can be exported a pulse, increases or reduce the use of counting as rotating cycle.

After scrambler is connected external power source, the second mu balanced circuit work, out-put supply 2, single-chip microcomputer 10 is started working, and reads the number of turns recorded in storage chip 9, and reads the angle value of Hall angular position sensor chip 7, by calculating, can obtain the absolute value of rotating shaft 3 mechanical locations, through interface circuit 11, accept the access of external communication circuit.

Claims

1. the rotation self-powered magneto-electric multi-turn absolute value encoder based on Wei root effect, comprise housing (5), it is characterized in that: be provided with fixed mount (2) in housing (5), two blocks of magnet steel (1) are fixed on fixed mount (2), fixed mount (2) is connected with rotating shaft (3), and circuit board (4) is positioned at magnet steel (1) top.

2. the rotation self-powered magneto-electric multi-turn absolute value encoder based on Wei root effect according to claim 1, it is characterized in that: described two blocks of magnet steel (1) are thickness and magnetize, the N magnetic pole of a slice magnet steel (1) is upwards placed, and the S magnetic pole of another sheet magnet steel (1) is upwards placed.

3. the rotation self-powered magneto-electric multi-turn absolute value encoder based on Wei root effect according to claim 1, it is characterized in that: Wiegand sensor (6), interface circuit (11) are positioned at the one side of circuit board (4), and Hall angular position sensor (7), fpga chip (8), ferroelectric memory (9), single-chip microcomputer (10) are positioned at the another side of circuit board (4).

4. according to the described rotation self-powered magneto-electric multi-turn absolute value encoder based on Wei root effect of claim 1 or 3, it is characterized in that: in described circuit board (4), comprise the rectification filtering voltage stabilizing circuit and the shaping circuit that are connected with Wiegand sensor (6), shaping circuit is connected with ferroelectric memory (9) with fpga chip (8) respectively; The power supply of rectification filtering voltage stabilizing circuit outputs to shaping circuit, fpga chip (8) and ferroelectric memory (9); Ferroelectric memory (9) is connected with single-chip microcomputer (10), and single-chip microcomputer (10) is connected with interface circuit (11) with Hall angular position sensor (7) respectively with respectively; The second mu balanced circuit is connected with ferroelectric memory (9), single-chip microcomputer (10), interface circuit (11) and Hall angular position sensor (7) respectively.