CN203811144U

CN203811144U - Angle measuring device based on incremental photoelectric encoder

Info

Publication number: CN203811144U
Application number: CN201420117564.9U
Authority: CN
Inventors: 舒望; 余谦
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-03-08
Filing date: 2014-03-08
Publication date: 2014-09-03
Anticipated expiration: 2024-03-08

Abstract

An angle measuring device based on an incremental photoelectric encoder is formed by a mainboard (1), the incremental photoelectric encoder (2) and a connecting cable (3). A rotating shaft of the incremental photoelectric encoder is rigidly connected with a measured object and rotates with the measured object synchronously, the incremental photoelectric encoder outputs pulse signals during rotation and sends the signals to the mainboard via the connecting cable, the statistics of the number of pulses is made and converted to an angle by the mainboard, and the corresponding angle is displayed via a display circuit so that the function of angle measurement is accomplished. The device employs the 10000-wire incremental photoelectric encoder, and the measuring precision can reach 2.16 point and is very high; the photoelectric encoder is connected with the mainboard via the cable, the assembling can be conveniently realized, and the device can be applicable to relative angle measuring occasions with various rotations.

Description

A kind of angle measurement unit based on incremental optical-electricity encoder

Affiliated technical field

The utility model relates to a kind of angle measurement unit, especially a kind of angle measurement unit based on incremental optical-electricity encoder, and the relative angle that can be applicable to various rotations is measured occasion.

Background technology

At present, the device of measuring for the relative angle rotating, its structure is mainly made up of parts such as angular transducer, signal shaping and waveform transformation circuit, angle display circuit, main controls.Its performance and precision depend on angular transducer completely.Traditional resistor type angle sensor, although circuit is simple, low price, because its precision is low, unstable properties, the application that causes this angular transducer is not very extensive.The capacitance-type inclination angle sensor that another is traditional, although precision compared with the increasing of resistance-type, performance is also more stable, this sensor can not be realized 360 degree or be greater than the measurement of angle of 360 degree.Therefore, find a kind of precision high, and can realize the angular transducer that wide-angle is measured, the relative angle that coordinates corresponding circuit and control program can realize rotation is measured, and existing measurement of angle circuit is improved and is necessary.

Utility model content

For the above-mentioned deficiency of existing angle measurement method, the technical matters that the utility model solves is a kind of rotation relative angle measurement mechanism based on incremental optical-electricity encoder of design.

Solving this technical problem adopted technical scheme is: a kind of angle measurement unit based on incremental optical-electricity encoder, is made up of mainboard, incremental optical-electricity encoder, stube cable three parts.Turning axle and the measured object of incremental optical-electricity encoder are rigidly connected, synchronize and rotate with measured object, incremental optical-electricity encoder has output of pulse signal when rotated, this signal is delivered to mainboard by stube cable, mainboard is converted into angle counting after pulse number, demonstrate corresponding angle by display circuit, thereby complete the function of measurement of angle.Because pulse of incremental optical-electricity encoder output can only be reacted the angle that this scrambler turning axle rotates, and can not indicate its absolute position, therefore, angle measurement unit described in the utility model is applicable to being applied to the relative angle measurement occasion of rotation.

Its inner grating of described incremental optical-electricity encoder is 10000 lines, and after its turning axle rotation tour, A phase and B are on good terms and export 10000 pulses, and corresponding taking measurement of an angle of pulse is 2.16 points.After this photoelectric encoder often rotates a circle, Z exports a pulse mutually, therefore can realize the measurement that is greater than 360 degree.

Described mainboard is made up of main controller circuit, LED digital pipe display circuit, 5V power circuit, 12V power circuit, photoelectric encoder pulse shaping circuit, key circuit.LED digital pipe display circuit, photoelectric encoder pulse shaping circuit, key circuit are all connected with main controller circuit.5V power circuit provides electric energy for main controller circuit, LED digital pipe display circuit, key circuit, and 12V power circuit provides electric energy for photoelectric encoder pulse shaping circuit.

The beneficial effects of the utility model are: the precision of measurement of angle is very high, can reach 2.16 points, and the mode return pulse signal of mainboard to interrupt, the angle pulse signal of processing photoelectric encoder that can be real-time, be unlikely to make dropout, make measurement of angle more accurate.In addition, photoelectric encoder can be rigidly connected with measured object, and photoelectric encoder is connected with mainboard by stube cable, thereby makes angle measurement unit described in the utility model, has advantages of the assembling of being easy to and be convenient to promote.

Brief description of the drawings

Fig. 1 is the utility model angle measurement unit structural drawing

Fig. 2 is the utility model mainboard theory diagram

Fig. 3 is the utility model photoelectric encoder pulse shaping circuit schematic diagram

Fig. 4 is the utility model main controller circuit schematic diagram

Fig. 5 is the utility model LED digital pipe display circuit schematic diagram

Fig. 6 is the utility model key circuit schematic diagram

Fig. 7 is the utility model 5V power circuit principle figure

Fig. 8 is the utility model 12V power circuit principle figure

Wherein: 1-mainboard, 2-incremental optical-electricity encoder, 3-stube cable, 11-photoelectric encoder pulse shaping circuit, 12-main controller circuit, 13-LED digital pipe display circuit, 14-key circuit, 15-5V power circuit, 16-12V power circuit.

Embodiment

Below in conjunction with the drawings and specific embodiments, the utility model is described further.

As shown in Figure 1, a kind of angle measurement unit based on incremental optical-electricity encoder of the utility model, is made up of mainboard 1, incremental optical-electricity encoder 2, stube cable 3.

As shown in Figure 2, a kind of angle measurement unit based on incremental optical-electricity encoder of the utility model, mainboard 1 is made up of photoelectric encoder pulse shaping circuit 11, main controller circuit 12, LED digital pipe display circuit 13, key circuit 14,5V power circuit 15 and 12V power circuit 16.

Photoelectric encoder pulse shaping circuit shown in Fig. 3 is made up of interface P3, phase inverter 74HC04, input current-limiting resistance R16, input current-limiting resistance R17, input current-limiting resistance R18.The function of this circuit is A phase that incremental optical-electricity encoder 2 is sent here, B phase, Z totally 3 road 12V rectangular pulse signals mutually, converts the rectangular pulse signal of 5V to, exports main controller circuit 12 to, since calculate angle value.

Electrify restoration circuit, decoupling capacitance C3, decoupling capacitance C4,8 current-limiting resistances that main controller circuit shown in Fig. 4 is made up of AVR Chip Microcomputer A tmega8L, 8 megahertz quartz oscillators, corrective capacity C1, corrective capacity C2, ISP download interface, R15 and C13 form.The function of this circuit is that the mode of interrupting receives the pulse signal that photoelectric encoder pulse shaping circuit 11 is sent here, after counting pulse number, converse corresponding angle, single-chip microcomputer demonstrates corresponding angle value by input/output port control LED digital pipe display circuit 13, thereby whether single-chip microcomputer has function key to press by the level state detection key circuit 14 that detects input/output port, and ISP download interface realizes download online program.

LED digital pipe display circuit shown in Fig. 6 is made up of 6 common anode type LED charactrons, 8550,6 current-limiting resistances of 6 driving triodes.The function of this circuit is under the control of single-chip microcomputer in main controller circuit 12, to complete angle to show.

Key circuit shown in Fig. 6 is made up of touch key S1 and pull-up resistor R19.The function of this circuit is to convert the mechanical action of user key-press to electric signal to deliver to the single-chip microcomputer in main controller circuit 12, thus the instruction of completing user input.

5V power circuit shown in Fig. 7 is made up of interface P1,4 commutation diode 1N4007, filter capacitor C5 and C6, decoupling capacitance C7 and C8, three terminal regulator LM78L05.The function of this circuit is to convert the alternating voltage of P1 to stable 5V DC voltage to provide electric energy for main controller circuit, LED digital pipe display circuit, key circuit.

12V power circuit shown in Fig. 8 is made up of interface P2,4 commutation diode 1N4007, filter capacitor C9 and C11, decoupling capacitance C10 and C12, three terminal regulator L7812CV.The function of this circuit is to provide electric energy for photoelectric encoder pulse shaping circuit 11.

Although described by reference to the accompanying drawings embodiment of the present utility model, those of ordinary skill in the art can make various distortion or amendment within the scope of the appended claims.

Claims

1. the angle measurement unit based on incremental optical-electricity encoder, it is characterized in that, comprise mainboard (1), photoelectric encoder (2), stube cable (3), described mainboard (1) comprises photoelectric encoder pulse shaping circuit (11), main controller circuit (12), LED digital pipe display circuit (13), key circuit (14), 5V power circuit (15) and 12V power circuit (16), the DC voltage of described 12V power circuit (16) output 12V is that photoelectric encoder pulse shaping circuit (11) provides galvanic current to press, described photoelectric encoder pulse shaping circuit (11) is connected with photoelectric encoder (2) by stube cable (3), the DC voltage of described 5V power circuit (15) output 5V is main controller circuit (12), LED digital pipe display circuit (13) and key circuit (14) provide galvanic current to press, described key circuit (14), LED digital pipe display circuit (13) and photoelectric encoder pulse shaping circuit (11), all be connected with main controller circuit (12).