CN205642281U - Two hall signal sampling magnetoelectric encoder - Google Patents

Abstract

The utility model provides a two hall signal sampling magnetoelectric encoder, it relates to the sensor technology field. The utility model discloses an it is complicated to solve current magnetoelectric encoder structure, problem with high costs, and then provide a two hall signal sampling magnetoelectric encoder. The utility model discloses a paster magnet steel, magnetic field signal that the magnet steel rotation changes, the hall sensor table that adopts two looks phasic differences 90 pastes samples to the magnetic field signal on magnetoelectric encoder code wheel for the simple compactness of overall structure is carried out arc tangent calculation to the signal and is obtained the angle value, realizes the detection of magnetoelectric encoder angle value.

Description

A kind of double Hall Signal sampling magnetism encoder

Technical field

This utility model relates to magnetism encoder angle detection field, belongs to sensor subject, is specifically related to a kind of magneto-electric encoder using double Hall elements.

Background technology

Magnetism encoder has that volume is little, anti-vibration, feature that reliability is high, especially under the environment such as greasy dirt, dust, remain able to ensure the work of high reliability, this excellent characteristic makes it extensively apply in civilian goods industry.But tradition magnetism encoder structure is complex, and components and parts are many, relatively costly.

Summary of the invention

This utility model is to solve the problem that existing magnetism encoder price is high, hardware configuration is complicated, and then provides a kind of double hall signal sampling magnetism encoder.

This utility model is adopted the technical scheme that by the above-mentioned technical problem of solution:

One of the present utility model double hall signal sampling magnetism encoder, including encoder bracing frame, it is characterized in that: encoder bracing frame one end is fixed on motor flange dish, the encoder bracing frame other end affixed magnetism encoder code-disc, the Hall element of affixed two phase 90 ° on described magnetism encoder code-disc, for reception field signal of sampling, affixed magnet steel on machine shaft, it is used for producing field signal.

This utility model has techniques below effect and an advantage:

This utility model uses the magnet steel being fixed on machine shaft to produce field signal, motor rotates and makes magnetic field change, use two Hall element sampling field signals, biphase field signal phase 90 °, magnetoelectricity angle value is obtained by arctangent computation, the angle value that this utility model realizes under minimum hall device number accurately detects so that overall structure is the compactest.

Accompanying drawing explanation

Fig. 1 overall structure schematic diagram, Fig. 2 part-structure profile.

1. motor in figure, 2. magnet steel, 3. encoder bracing frame, 4. magnetism encoder code-disc, 5. first Hall element, 6. second Hall element, 1-1 machine shaft, 1-2 motor flange dish, 3-1 encoder bracing frame one end, the 3-2 encoder bracing frame other end.

Detailed description of the invention

Embodiment 1, sees accompanying drawing 1,2.

A kind of double hall signal sampling magnetism encoders that this use is novel, including encoder bracing frame 3, it is characterized in that: encoder bracing frame one end 3-1 is fixed on motor flange dish 1-2, encoder bracing frame other end 3-2 affixed magnetism encoder code-disc 4, on described magnetism encoder code-disc 4, the Hall element 5,6 of affixed two phase 90 °, is used for reception field signal of sampling, on machine shaft 1-1, affixed magnet steel 2, is used for producing field signal.

When motor 1 rotates forward, magnet steel 2 rotates forward, produce the field signal of change, it is fixed in two Halls 5 of carrier phase shift 90 ° on magnetism encoder code-disc 4,6 pairs of field signals are sampled, obtain the cosine and sine signal of two-way phase 90 °, use arctangent computation to obtain magnetism encoder angle value two paths of signals.

Embodiment 2, sees accompanying drawing 1,2.

Other are with embodiment 1, except for the difference that motor 1 reversely rotates, magnet steel 2 reversely rotates, produce the field signal of change, it is fixed on magnetism encoder code-disc 4 Hall 5,6 of two phase 90 °, receives, for sampling, the field signal reversely rotated, obtain the cosine and sine signal of two-way phase 90 °, use arctangent computation to obtain the magnetism encoder angle value under counterrotation con two paths of signals.

Present embodiment is the exemplary illustration to this patent, does not limit its protection domain, and its local can also be changed, as long as no the spirit beyond this patent, all in the protection domain of this patent by those skilled in the art.

Claims (1)

1. One the most of the present utility model double hall signal sampling magnetism encoder, including encoder bracing frame (3), it is characterized in that: encoder bracing frame one end (3-1) is fixed on motor flange dish (1-2), the encoder bracing frame other end (3-2) affixed magnetism encoder code-disc (4), first Hall element (5) of upper affixed two phase of described magnetism encoder code-disc (4) 90 °, second Hall element (6), the field signal of 90 ° is differed for receiving phase of sampling, the upper affixed magnet steel (2) of machine shaft (1-1), for producing field signal.