CN201284615Y

CN201284615Y - Rolling screen position sensing device of electric rolling screen-driving controller

Info

Publication number: CN201284615Y
Application number: CNU200820137211XU
Authority: CN
Inventors: 陈耀华
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-09-22
Filing date: 2008-09-22
Publication date: 2009-08-05
Anticipated expiration: 2018-09-22

Abstract

The utility model relates to a roller shutter position sensing device of electric roller shutter driving controller. The sensing device is provided with an photo-coupler reflecting disc capable of rotating with the rotating shaft of the roller shutter; a plurality of reflection regions which are distributed along the circumferential direction with equidistance are arranged in the annular region of the photo-coupler reflecting disc; a photo-coupler fixed at the side part of the photo-coupler reflecting disc receives light-reflected signals sent from the reflection regions in the annular region, and the number of signals is utilized to count the rotation number of the photo-coupler reflecting disc; and a controller computes the position of the roller shutter by measuring the rotation number of the photo-coupler. The utility model can flexibly obtain the information of the rotation number and the rotating direction of the reflecting disc by the photo-coupler and compute the position of the roller shutter through the distribution of the reflection regions on the photo-coupler reflecting disc, thereby having the advantages of simple structure, less components, small size and high sensing precision.

Description

The roller shutter position sensing device of electric rolling driving governor

Technical field

The utility model belongs to a kind of driving control device that opens and closes shade, is specifically related to a kind of roller shutter method for detecting position and sensing device of electric rolling driving governor.

Background technology

Light-shading curtains such as electric coiling formula shutter, roller shutter or thin slice curtain normally twist on the Roller for roller blind, and the belt that is twisted on the tape handler by driving governor control motor-driven drives the spool rotation, realizes opening or putting down of light-shading curtain.In the process of motorized motions control rolling curtain opening-closing, only mostly be now standard-sized sheet, full-shut position as controlling target, but in actual use, often need the control roller shutter different switching degree to be arranged to control different ventilations and illumination, this just need measure the real-time position of roller shutter, reaching standard-sized sheet, the full cut-off that accurately to control roller shutter, and can open and close purpose in various degree.And because the electric rolling driver will be installed in the shelter usually, according to designing requirement, occupation space is very limited, so can not increase more detection part, requires the volume of checkout gear as far as possible little.

Summary of the invention

The technical problems to be solved in the utility model provide a kind of simple in structure, take up room little, and can accurately measure the roller shutter position sensing device of the electric coiling formula window-blind of roller shutter position.

The technical scheme that addresses the above problem is: the utility model is provided with Roller for roller blind and is in transmission connection, can rise with one the optocoupler reflecting disc of rotation, at least be provided with one first annulus on the optocoupler reflecting disc, in this annulus, be provided with some circumferential equally distributed reflective areas, be fixed with first optocoupler facing to reflecting disc first annulus at the position relative with the optocoupler reflecting disc, first optocoupler is connected with the controller input with tally function, and controller output end connects motor by Drive and Control Circuit.

Further scheme of the present utility model is: be provided with second annulus different with the first annulus radius on the optocoupler reflecting disc, be provided with some reflective areas in second annulus, be fixed with second optocoupler that faces toward second annulus at the position relative with the optocoupler reflecting disc, second optocoupler is connected with the controller input with tally function.

Further scheme is again: be provided with three annulus different with the first annulus radius, be provided with a reflective areas that is used for whole circle counting in the 3rd annulus, be fixed with the 3rd optocoupler at the position relative facing to reflecting disc the 3rd annulus with the optocoupler reflecting disc.

Described optocoupler is meant the device with light emission, light-receiving, photoelectric converting function.

Operating principle of the present utility model is: the optocoupler reflecting disc is with the rotating speed identical with Curtain roller or the rotational speed of same ratio, when each reflective areas on the reflecting disc is passed through the optocoupler corresponding with it, promptly can give an one light reflected signal, optocoupler becomes pulse electrical signal with this signal and is input to the controller with tally function, when the light reflected impulse number of signals that receives first annulus reaches the reflective areas number N of this annulus setting, judge that promptly the optocoupler reflecting disc has rotated a circle, remainder n more than the N integral multiple then can count the n/N circle, the reflective areas quantity that annulus is provided with is many more, the precision of measuring is high more, precision can reach the 1/N circle, according to the rotation number of turns of optocoupler reflecting disc, can calculate the position of roller shutter.

Can serve as with reference to position (contract fully or open entirely etc.) for example with a certain permanent position of roller shutter, with the optocoupler reflecting disc relatively the moving all pairing roller shutter position datas of this reference position revolution exist in the controller in advance, like this when controller obtain as stated above the optocoupler reflecting disc relative to this reference position rotate the number of turns after, can calculate the current location of roller shutter, and send drive control signal to motor in view of the above.

The further scheme of the utility model is provided with second annulus, can be convenient to phase difference between the light reflected signal that the controller utilization receives from the optocoupler reflecting disc like this and judge the rotation direction of optocoupler reflecting disc, the count signal that also can utilize this circle to send simultaneously improves certainty of measurement.

The reflective areas that the further again scheme of the utility model is provided with at the 3rd annulus, can be used for doing integer circle counting, whenever obtain the heliogram that one the 3rd annulus sends, can judge that reflecting disc has rotated a circle, controller can utilize this signal as whole circle count signal.

The utility model can be by in one or more annuluses of optocoupler optical reflective disk, the layout of reflective areas is set on quantity and the phase place as required flexibly, utilize optocoupler to obtain number of signals and/or the phase place that reflective areas sends and judge the number of turns and the rotation direction that reflecting disc rotates, and then calculate the position at roller shutter place, it is few to the utlity model has components and parts simple in structure, that use, it is little to take up room, the advantage that sensing accuracy is high.

Description of drawings

Fig. 1, the utility model embodiment 1 are contained in the structural representation on the roller shutter drive unit

Fig. 2, the utility model embodiment 1 optocoupler reflecting disc, 6 structures and optocoupler relative position schematic diagram (be directly perceived the expression, 90 degree have outwards been changeed in circuit board 5 left sides that this figure is equipped with optocoupler)

The A of Fig. 3, Fig. 1 embodiment 1 optocoupler reflecting plate 6 and photoelectric coupled circuit plate 5 is to structural representation

Fig. 4, the pulse signal schematic diagram that IR1, IR2, IR3 send when clockwise rotating

Fig. 5, the pulse signal schematic diagram that IR1, IR2, IR3 send when rotating counterclockwise

Fig. 6, the utility model embodiment 1 circuit diagram

Fig. 7, the utility model embodiment 2 optocoupler reflecting discs and optocoupler distributed architecture schematic diagram

1-casing 2-motor 3-gearbox 4-take-up spool 5-photoelectric coupled circuit plate 6-optocoupler reflecting disc 7-ring gear 8-belt 9-directive wheel 10-driving governor

The specific embodiment

Embodiment 1

Fig. 1 is that this example is contained in the structural representation on the roller shutter drive unit.

Motor 2 drives ring gears 7 by gearbox 3 and rotates, and the take-up spool 4 of coiling belt 8 is coaxial with ring gear 7, and ring gear 7 and take-up spool 4 drive the Roller for roller blind rotations by belt 8, the switching of driving roller shutter with identical rotational speed.Motor 2 is driven by driving governor 10, and driving governor is provided with and detects the sensing device that ring gear 7 rotates the number of turns, and its concrete structure is:

On the ring gear 7 that is in transmission connection with Roller for roller blind, be provided with can coaxial synchronous rotation with it optocoupler reflecting disc 6, the optocoupler reflecting disc is provided with three different annuluses of radius, outside in be first annulus 61, second annulus 62, the 3rd annulus 63 successively, be respectively equipped with circumferential 6

reflective areas

6a, 6b that equidistantly distribute in first and second annulus, the 3rd annulus is provided with a reflective areas 6c.

The reflective areas of optocoupler reflecting disc 6 annulus settings is a silvery-white finish, other position is a black, in the optocoupler reflecting disc rotation process, optocoupler runs into argenteous reflective areas promptly can produce a high level, and the extinction district that to run into non-reflective areas one be black promptly can produce a low level.

Be provided with optocoupler reflecting disc 6 relative positions be fixed on the photoelectric coupled circuit plate 5, respectively facing to first, second and third optocoupler IR1, IR2, the IR3 of three annuluses on the optocoupler reflecting disc, three optocouplers are being projected on the same radius on the dish of penetrating of optocoupler.

The reflective areas 6b of the reflective areas 6a of first annulus and second annulus is the fan section that central angle is 30 degree, and they partially overlap in circumferential 15 angles that differ.

Reflective areas 6b in this example second annulus and the reflective areas 6a in first annulus are in the circumferential angle that staggers, and partially overlap, the first optocoupler IR1 and the second optocoupler IR2 are being projected on the same radius on the dish of penetrating of optocoupler, and the function of this layout setting is:

1, controller can judge that the optocoupler reflecting disc be just to change or reverse according to the phase place of the signal that receives from two annuluses, referring to Fig. 4, Fig. 5 is respectively the positive hour hands of reflecting disc and three pulse signal figure that optocoupler sends when counterclockwise rotating, can find out from these two figure, when the reflective areas pulse signal of first and second annulus all is in a high position, if the second annulus pulse reduces earlier, just can be judged as is to turn clockwise, if the first annulus pulse reduces earlier, can be judged as is counterclockwise to change.

It is multiple to judge that by the phase place of received signal the method for optocoupler reflecting disc rotation direction can have, and the advantage of said method is to accomplish that each step pitch can both detect the rotation direction of optocoupler reflecting disc, improves and detects accuracy.

2, also can improve and measure the precision that reflecting disc rotates the number of turns, if when single 6 reflective areas with first annulus are measured the rotation number of turns of optical reflective disks, certainty of measurement is 1/6, and the setting when pressing this example second annulus reflective areas can make precision bring up to 1/12.

Generally, when first and second annulus is respectively equipped with in circumferential even distribution, reflective areas that quantity is identical, and reflective areas is a half of reflective areas central angle with the central angle phase difference identical, every group of corresponding reflective areas of first and second annulus of non-reflective areas, and the promptly comparable accuracy of detection that an annulus is set improves.

The 3rd annulus 6c be provided with one overlap with first and second annulus reflective areas, central angle is the fan-shaped reflective areas 6c of 15 degree.

Whenever obtain the heliogram that one the 3rd annulus sends, can judge that reflecting disc has rotated a circle, controller can utilize this signal as whole circle count signal, cooperate the signal that sends with other annulus as metering signal again less than a circle, the also available whole circle count signal of controller is proofreaied and correct the number of signals that other annulus obtains simultaneously, promptly controller receives reflection light pulse number of signals that other annulus sends with the quantity of the reflective areas of this annulus setting when unequal between two whole circle count signals, the signal that this annulus is sent carries out the adjustment of data: the signal that will lose mend into, (interference) signal that maybe will have more is removed, in case form the bigger accumulation of error after the moving multi-turn of spline.

This routine optocoupler IR1, IR2, IR3 adopt the infrared optocoupler of the ITR8307/718/F43 of Ricoh.

Fig. 6 is the utility model embodiment circuit diagram: three optocoupler IR1, IR2, IR3 (the U3 in the circuit diagram, U4, U5) optical signal becomes behind the signal of telecommunication respectively through Q4, Q5, Q6 is input to 14 of controller W79E825W chip after amplifying, 16,17 pin, and by 1,19,20 pin output control signal, the control utmost point of thyristor Q1 in 1 pin and ground connection one lateral circuit that is serially connected in drive motors M current supply circuit is connected, the break-make of control motor, 19,20 pin respectively with switch control valve Q2, the Q3 base stage connects, by relay J 1, the commutator K1 of J2, the rotating of K2 control motor.

Embodiment 2

As different from Example 1: the corresponding reflective areas of first and second annulus is on same radius on this routine optocoupler reflecting disc, it is the circumferential angle that do not stagger, for the light reflected signal that different optocouplers the are received angle that staggers, to judge the rotation direction of reflecting disc, the first optocoupler IR1 that this example is corresponding with first and second annulus respectively and the second optocoupler IR2 are at the circumferential 15 degree angles of staggering, utilize the pulse signal phase difference of this two optocouplers generation, can judge the positive and reverse return veer of reflecting disc equally.

Essence of the present utility model is reflective areas to be set on the optocoupler reflecting disc and to receive the light reflected signal that rotation optocoupler reflecting disc sends with optocoupler, by the quantity of obtaining signal, the rotation number of turns and the rotation direction information that phase difference obtains reflecting disc, and then obtaining the position of the roller shutter that is in transmission connection with the optocoupler reflecting disc, the layout of reflective areas can change as required flexibly.This example has been enumerated the example that one, two, three annulus is set, and also more annulus can be set as required.

The above; it only is preferred embodiment of the present utility model; be not that the utility model is done any pro forma restriction; every foundation technical spirit of the present utility model all still belongs to the protection domain of technical solutions of the utility model to any simple modification, equivalent variations and modification that above embodiment did.

Claims

1, the roller shutter position sensing device of electric rolling driving governor, it is characterized in that: be provided with Roller for roller blind and be in transmission connection, can play the optocoupler reflecting disc (6) of rotation with one, at least be provided with one first annulus (61) on the optocoupler reflecting disc, in this annulus, be provided with some circumferential equally distributed reflective areas (6a), be fixed with first optocoupler (IR1) facing to reflecting disc first annulus at the position relative with the optocoupler reflecting disc, first optocoupler is connected with the controller input with tally function, and controller output end connects motor by Drive and Control Circuit.

2, the roller shutter position sensing device of electric rolling driving governor according to claim 1, it is characterized in that: on the optocoupler reflecting disc, be provided with second annulus (62) different with the first annulus radius, be provided with some reflective areas (6b) in second annulus, be fixed with second optocoupler (IR2) that faces toward second annulus at the position relative with the optocoupler reflecting disc, second optocoupler is connected with the controller input with tally function.

3, the roller shutter position sensing device of electric rolling driving governor according to claim 2 is characterized in that: be provided with circumferential even distribution in described second annulus: with the identical reflective areas (6b) of reflective areas (6a) quantity in first annulus.

4, the roller shutter position sensing device of electric rolling driving governor according to claim 3, it is characterized in that: reflective areas (6b) in second annulus and the reflective areas (6a) in first annulus are in the circumferential angle that staggers, and partially overlap, first optocoupler (IR1) and second optocoupler (IR2) are being projected on the same radius on the dish of penetrating of optocoupler.

5, the roller shutter position sensing device of electric rolling driving governor according to claim 4, it is characterized in that: the reflective areas of described first annulus and second annulus is identical with the central angle of non-reflective areas, and the phase difference of every group of corresponding reflective areas of first and second annulus is the reflective areas central angle half.

6, the roller shutter position sensing device of electric rolling driving governor according to claim 3, it is characterized in that: the corresponding reflective areas of first and second annulus is on same radius on the optocoupler reflecting disc, and corresponding with first and second annulus respectively first optocoupler (IR1) and second optocoupler (IR2) are at the circumferential angle once of staggering.

7, according to the roller shutter position sensing device of the described electric rolling driving governor of the arbitrary claim of claim 1-6, it is characterized in that: be provided with one the 3rd annulus (63), be provided with a reflective areas (6C) that is used for whole circle counting in the 3rd annulus, be fixed with the 3rd optocoupler (IR3) at the position relative facing to reflecting disc the 3rd annulus with the optocoupler reflecting disc.