CN208887657U - A kind of photoelectric encoder using MN chip - Google Patents

Abstract

A kind of photoelectric encoder using MN chip, including circuit board, code-disc, encoder basement, luminous tube, main body and main shaft, the code-disc is fixed on encoder basement, the encoder basement is fixed together by main shaft and main body, and the luminous tube is fixed in main body, is fixed with photocell below the circuit board, the photocell and luminous tube are just opposite, the code-disc is placed between photocell and luminous tube, and the circuit board is fixed on the supporting leg of main body, and the MN chip is placed on circuit board.Cooperate the code-disc of three code channels that can realize 25 encoders in the case where not increasing code-disc volume using MN chip, to reduce the thickness of encoder, enhances shock resistance.

Description

A kind of photoelectric encoder using MN chip

Technical field

The utility model relates to photoelectric encoder field, especially a kind of photoelectric encoder using MN chip.

Background technique

The whole world another productivity great development background under, the inventing of people, the machine instrument of use, contact Continuous miniaturized intelligent, structure is complicated changes.And the eyes encoder as machine is also just displaced only at machine measurement One scale, reveal in the market IC company, existing Germany production MN chip, MN chip receive corresponding electric signal by comparison and Analytical calculation determines the angle or displacement of rotation, is then replaced output mode to meet by program and various communication chips Various output demands.

Encoder working principle；

There is the photoelectric code disk of axis by a center, there is annular to lead to thereon, dark groove, there is photoemission and receiving device to read It takes, obtains four groups of sine wave signals and be combined into A, B, C, D, each sine wave differs 90 degree of phase differences and (is relative to a cycle 360 degree), C, D signal is reversed, it is superimposed upon in A, B two-phase, stabilization signal can be enhanced；Separately transfer out a Z phase pulse often with generation Table zero reference position.It, can be by comparing A phase in preceding or B Xiang Qian, to differentiate encoder since A, B two-phase differ 90 degree Forward and reverse can get the zero reference position of encoder by zero pulse.

The composition of encoder digit:

Assuming that encoder is N encoders, then it forms y (X+Y=N) by thick code x+ essence code, thick code is carved by code-disc The code channel of picture is found out the thick code in how many position and is determined by designer come what is determined.

Smart code is to segment, and shaft encoder one week is 360 °, it is assumed that turning to certain point this point is 123 ° 10 ' 11 ", (any angle), due to the gap of grating, collected bright dark signal is not continuous.Next point may be 124 ° 10 ' 11 ", it is also possible to 123 ° 29 ' 45 ", it may be possible to any angle.Assuming that this angle is θ, then 123 ° 10 ' 11 " to angle, θ it Between just have the difference of an angle this differential seat angle averagely separated by Y equal portions by the calculating of single-chip microcontroller, wherein it is every it is a all There is oneself corresponding position, here it is the smart codes segmented.Thick code and smart code pass through the displacement of software and add up.Before namely X+y=N. in the hypothesis of face

Most of domestic encoder has limitation to the photoelectric encoder of form of tubes using to form of tubes Property, to pipe encoder in order to which the requirement code-disc volume for meeting precision is very huge, largely occupy the body inside using machine Product, and to pipe photoelectric encoder, structure is complicated, and debugging trouble is limited the ability for resisting impact endurance test shock by code-disc and slit Also extremely limited, and precision is also extremely difficult to the requirement of instrument.

In order to follow the step in epoch, and machinery itself to the volume of encoder, precision, shock proof requirement, Yi Zhongxin The photoelectric encoder of type comes into being.

Utility model content

Utility model aims to solve the deficiencies in the prior art, provide a kind of photoelectric coding using MN chip Device.

For realize object above the following technical schemes are provided:

A kind of photoelectric encoder using MN chip, including circuit board, code-disc, encoder basement, luminous tube, main body and main shaft, The code-disc is fixed on encoder basement, and the encoder basement is fixed together by main shaft and main body, and the luminous tube is fixed on master On body, be fixed with photocell below the circuit board, the photocell and luminous tube are just opposite, the code-disc be placed in photocell and Between luminous tube, the circuit board is fixed on the supporting leg of main body, and the MN chip is placed on circuit board.

Preferably, there are three code channels for the code-disc band.

The utility model has the following beneficial effects:

1, cooperate the code-disc of three code channels that can realize 25 in the case where not increasing code-disc volume using MN chip Encoder enhances shock resistance to reduce the thickness of encoder.

2, photocell is substituted into adopter and slit, reduces encoder height, keeps structure simpler.

3, the encoder of this structure is not necessarily to multiple luminous tubes, it is only necessary to which a luminous tube can meet the need of encoder It asks, reduces energy consumption, save space, reduce damage probability.

Detailed description of the invention

Fig. 1 is the utility model encoder perspective view of the explosion；

Fig. 2 is the utility model overall structure diagram；

Fig. 3 is the utility model section figure.

Specific embodiment

It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described Embodiment be only the utility model a part of the embodiment, instead of all the embodiments.Usually described in attached drawing here It can arrange and design with a variety of different configurations with the component of the utility model embodiment shown.Therefore, below to The detailed description of the embodiments of the present invention provided in attached drawing is not intended to limit the model of claimed invention It encloses, but is merely representative of the selected embodiment of the utility model.Based on the embodiments of the present invention, those skilled in the art exist Every other embodiment obtained under the premise of creative work is not made, is fallen within the protection scope of the utility model.

It should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular in the description of the present invention, Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, term " the One ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.

In addition, in the description of the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be Mechanical connection, is also possible to be electrically connected；It can be directly connected, two can also be can be indirectly connected through an intermediary Connection inside element.For the ordinary skill in the art, it can understand that above-mentioned term is practical at this with concrete condition Concrete meaning in novel.

A kind of photoelectric encoder using MN chip as shown in FIG. 1 to FIG. 3, including circuit board 100, code-disc 101, code-disc Seat 102, luminous tube 104, main body 103 and main shaft 105, the code-disc 101 are fixed on encoder basement 102, and the encoder basement 102 is logical It crosses main shaft 105 to be fixed together with main body 103, the luminous tube 104 is bolted in main body 103, the luminous tube 104 are fixed on luminous tube socket 104a, are fixed with photocell 106 below the circuit board 100, the photocell 106 with shine Pipe 104 is just opposite, and the code-disc 101 is placed between photocell 106 and luminous tube 104, and the circuit board 100 is fixed on main body On 103 supporting leg, the MN chip is placed on circuit board 100.The code-disc 101 is with there are three code channels.

MN chip is a encoder chip that German IC company develops, and MN chip is 3 channels, while the number sampled Word converter, it is inserted into sin/cos sensor signal using high-precision SAR converter, its optional high resolution reaches 13.Each input has one individually to sample and hold the stage, it can stop tracking signal, to realize subsequent se- Quantization.Various 2-3 rail vernier graduation calculating are configurable to the calculating of high-resolution angle position (after non-ius)；This A little calculate allows angular resolution to be up to 25.

Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to In this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation Or replacement, it should be covered within the scope of the utility model.Therefore, the protection scope of the utility model is answered described with power Subject to the protection scope that benefit requires.

Claims (2)

1. a kind of photoelectric encoder using MN chip, which is characterized in that including circuit board, code-disc, encoder basement, luminous tube, master Body and main shaft, the code-disc are fixed on encoder basement, and the encoder basement is fixed together by main shaft and main body, the luminous tube It is fixed in main body, is fixed with photocell below the circuit board, the photocell and luminous tube are just opposite, and the code-disc is placed in Between photocell and luminous tube, the circuit board is fixed on the supporting leg of main body, and the MN chip is placed on circuit board.

2. a kind of photoelectric encoder using MN chip according to claim 1, which is characterized in that the code-disc has three A code channel.