CN102323435A - Locomotive multi-channel specific signal phase difference photoelectric rotation speed sensor module box - Google Patents

Abstract

The invention discloses a locomotive multi-channel specific signal phase difference photoelectric rotation speed sensor module box. In the module box, two groups or more of channel signals are designed; and the distance between every two adjacent groups of signal channels guarantees that the channel signals have phase difference meeting requirements. In the prior art, a path of signal output is designed in the module box. When a locomotive has signal phase difference requirement on the channels of a photoelectric rotation speed sensor, the signals which meet requirements can only be acquired by continuously adjusting the mounting positions of the two module boxes. Since the physical positions of the two module boxes are arranged at a long distance away from each other, the stability of signal output can be directly influenced by accumulated errors during machining of parts such as grating disks and the like. In the invention, as a plurality of paths of channel signals are designed in the same module box, the influence of the accumulated errors of the parts on the signal output is greatly reduced. Stable and reliable locomotive running speed signals are output to guarantee running safety.

Description

A kind of locomotive hyperchannel, signal specific phase differential photoelectric sensor modular cartridge

Technical field

The present invention relates to a kind of locomotive hyperchannel, signal specific phase differential photoelectric sensor modular cartridge, particularly relate to the train photoelectric sensor modular cartridge design that a kind of hyperchannel given reference phase difference requires.Belong to railway locomotive velocity measuring technique field.

Background technology

Growing along with the current domestic train speed of a motor vehicle and load-bearing capacity, safe driving is also paid close attention to more and more widely and is paid attention to.This just requires train must receive current running speed signal accurately and reliably.Existing tachogenerator is main with photoelectric sensor mainly, is characterized in testing the speed precisely.It has the output of multiple signals passage simultaneously, and specific phase differential requirement is arranged between each channel signal, in train travelling process, can play the anti-slip back effect of phase place well.And existing hyperchannel photoelectricity speed probe design all is each modular cartridge one paths signal, independently is installed on the sensor mount pad respectively.Its shortcoming is far away apart from being separated by between each channel module box, and the cumulative errors when parts are produced was once big to the influence of signal phase difference.Simultaneously, when debugging each signalling channel phase differential, otherwise the installation site of the adjusting module box that stops, the efficient extreme difference.

Summary of the invention

The objective of the invention is to overcome above-mentioned defective, provide a kind of simple in structure, safe and reliable and can export locomotive hyperchannel, the signal specific phase differential photoelectric sensor modular cartridge of reliable and stable locomotive running speed signal accurately and effectively.

Technical scheme of the present invention is: a kind of locomotive hyperchannel, signal specific phase differential photoelectric sensor modular cartridge; It comprises modular cartridge, axle and grating dish; Its axle one end links to each other with tested rotating object; The other end is used to install the grating dish, drives grating dish and tested rotating object and rotates synchronously, it is characterized in that:

Described modular cartridge is provided with two groups or two groups of above light emitting diode and photodiode mounting holes; Be that light emitting diode and photodiode are set in the mounting hole; Every group of light emitting diode and photodiode are one group of photovalve; This light emitting diode (11) and photodiode (12) front and back position are interchangeable, and the distance between every group of photovalve is a fixed value d;

Be provided with the grating groove of quantity k on the described grating dish equably according to different request for utilizations, grating dish position when mounted guarantees that grating groove on the grating dish is between light emitting diode mounting hole on the modular cartridge and photodiode mounting hole; Cooperate the system of making it to export apart from d with the grating dish to meet the channel signal that phase differential requires between every group of photovalve on the modular cartridge.

Distance between every group of photovalve in this locomotive hyperchannel, the signal specific phase differential photoelectric sensor modular cartridge is that the expression formula of a fixed value d is following:

$\mathrm{\θ}=\mathrm{nT}\±\frac{\mathrm{\α}}{360}T$

$d=2l\×\mathrm{tg}\frac{\mathrm{\θ}}{2}\→\mathrm{\θ}=2\mathrm{arctg}\frac{d}{2l}$

Wherein T is the angle in adjacent two grating grooves and the grating dish center of circle on the grating dish; K is the quantity of grating groove on the grating dish; θ is the angles of two groups of group photovalves of modular cartridge between the subpoint on the grating dish and the grating dish center of circle, and n is an integer quotient, and α is the phase differential angle of designing requirement; D is the distance between every group of photovalve on the modular cartridge, and l is the distance of the projection join line of per two groups of photovalves on the grating dish on the grating dish center of circle and the modular cartridge.

Therefore when we have a definite phase differential angle to require α; We can select suitable coefficient n; Confirm an angle θ; Come the size l and the d of design module box again according to formula

; Equally; During concrete the assembling; Because the size d of modular cartridge is immutable for confirming, the size l when we can come the adjusting module box to install according to formula

is to reach a desirable angle θ.

The present invention in same modular cartridge, has reduced the influence of parts cumulative errors to signal output with the multiplexer channel Design of Signal to a great extent.To export reliable and stable locomotive running speed signal, guarantee traffic safety.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a right TV structure synoptic diagram of the present invention;

Among the figure: 1-modular cartridge, 2-axle, 3-grating dish, 11-light emitting diode, 12-photodiode.

Embodiment:

Referring to Fig. 1 and Fig. 2,, a kind of locomotive hyperchannel, signal specific phase differential photoelectric sensor modular cartridge, it comprises:

One modular cartridge 1; This modular cartridge 1 includes two groups or two groups of above light emitting diode and photodiode mounting holes; Every group of light emitting diode 11 is one group of photovalve with photodiode 12; This light emitting diode 11 is interchangeable with photodiode 12 front and back positions, and the distance between every group of photovalve is a fixed value d.

One grating dish 3, this grating dish 3 is provided with the grating groove of some k equably according to different request for utilizations, and grating dish 3 position when mounted guarantees that grating groove on the grating dish 3 is between hole of light emitting diode on the modular cartridge 1 and photodiode hole.Distance between every group of photovalve on the modular cartridge 1 cooperates the assurance system to export with grating dish 3 and meets the channel signal that phase differential requires.

One 2, these axle 2 one ends link to each other with tested rotating object, and the other end is used to install grating dish 3, drive grating dish 3 and rotate synchronously with tested rotating object.

Distance between every group of photovalve in this locomotive hyperchannel, the signal specific phase differential photoelectric sensor modular cartridge is that the expression formula of a fixed value d is following:

$\mathrm{\θ}=\mathrm{nT}\±\frac{\mathrm{\α}}{360}T$

$d=2l\×\mathrm{tg}\frac{\mathrm{\θ}}{2}\→\mathrm{\θ}=2\mathrm{arctg}\frac{d}{2l}$

Wherein T is the angle in adjacent two grating grooves and grating dish 3 centers of circle on the grating dish; K is the quantity of grating groove on the grating dish 3; θ is the angle of 1 liang of group group of modular cartridge photovalve between the subpoint on the grating dish 3 and grating dish 3 centers of circle, and n is an integer quotient, and α is the phase differential angle of designing requirement; D is the distance between every group of photovalve on the modular cartridge 1, and l is the distance of the projection join line of per two groups of photovalves on grating dish 3 on grating dish 3 centers of circle and the modular cartridge 1.

Therefore when we have a definite phase differential angle to require α; We can select suitable coefficient n; Confirm an angle θ; Come the size l and the d of design module box 1 again according to formula

; Equally; During concrete the assembling; Because the size d of modular cartridge 1 is immutable for confirming, the size l when we can come adjusting module box 1 to install according to formula

is to reach a desirable angle θ.

Example: we require phase differential angle α is 90 °, and according to the size Selection coefficient n=7 of light emitting diode and photodiode, the k value of system requirements grating dish 3 is 200, then

Get Then

Get l=25.5, then $d=2l\×\mathrm{Tg}\frac{\mathrm{\θ}}{2}=2\×25.5\×\mathrm{Tg}\frac{13.05}{2}\≈5.83.$ Therefore; We are when the design module box; Can the distance between two groups of light emitting diodes or the photodiode be decided to be 5.83mm, modular cartridge on the installation site time two groups of light emitting diodes or the distance of photodiode between the center of circle of projection on the grating dish 3 and grating dish 3 be decided to be 25.5mm.

Claims (1)

1. a locomotive hyperchannel, signal specific phase differential photoelectric sensor modular cartridge; It comprises modular cartridge (1), axle (2) and grating dish (3); Axle (2) one ends link to each other with tested rotating object; The other end is used to install grating dish (3), drives grating dish (3) and rotates synchronously with tested rotating object, it is characterized in that:

Described modular cartridge (1) is provided with two groups or two groups of above light emitting diode (11) and photodiode (12) mounting holes; Be that light emitting diode (11) and photodiode (12) are set in the mounting hole; Every group of light emitting diode (11) and photodiode (12) are one group of photovalve; This light emitting diode (11) and photodiode (12) front and back position are interchangeable, and the distance between every group of photovalve is a fixed value d;

Described grating dish (3) is gone up the grating groove that is provided with quantity k according to different request for utilizations equably, and grating dish (3) position when mounted guarantees that the grating groove on the grating dish (3) is positioned at modular cartridge (1) and goes up between light emitting diode (11) mounting hole and photodiode (12) mounting hole; Cooperating with grating dish (3) apart from d between every group of photovalve on the modular cartridge (1) makes it the channel signal that system's output meets the phase differential requirement.

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