CN202472008U

CN202472008U - Visibility regulator

Info

Publication number: CN202472008U
Application number: CN2012200384173U
Authority: CN
Inventors: 滕军; 黄衍宏; 佟增亮; 王国新; 沙广军; 魏国栓; 肖巧景
Original assignee: Kaimai (luoyang) Ltd Measuring Ring
Current assignee: Kaimai (luoyang) Ltd Measuring Ring
Priority date: 2011-11-30
Filing date: 2012-02-07
Publication date: 2012-10-03
Anticipated expiration: 2022-02-07

Abstract

The utility model discloses a visibility regulator comprising a base, and a light transmitter and a light receiver which are symmetrically arranged on the base. A light emission port of the light transmitter and a light receiving port of the light receiver are oppositely arranged in an upward inclined manner, and the ligature of the rims of the light emission port and the light receiving port forms a stray light path. A light screen for cutting off the stray light path is arranged below the light beams emitted by the light transmitter on the base. The light screen cuts off the stray light path, so the light receiver can not receive the stray lights and the measurement precision of the light receiver is ensured.

Description

The visibility standards device

Technical field

The utility model relates to a kind of device of calibrating the transmittance meter measuring accuracy, belongs to the meteorologic instrument field.

Background technology

Visibility is one of important elements of meteorological observation, refers to the critical distance that the normal eye can see, not only is used for meteorological observation department, and is widely used in fields such as aviation, navigation, highway, military affairs and environmental monitoring.At traffic and transport field, especially in the air transportation, visibility has directly reflected pilot's visual range size, is one of important meteorological element of flight safety; In the environmental monitoring field, visibility is people's first direct reactions to the atmospheric pollution situation, and as a characteristic quantity of atmospheric pollution level, its measurement has received widely and having paid attention to; In military field, accurately observing and predicting of visibility also is one of indispensable meteorological element in army's military operation, and in a word, visibility all has very big influence to each field.

Along with improving constantly of automaticity; The observation of visibility changes Instrument observation into by range estimation; Along with the demand of transmittance meter is urgent further, the measuring accuracy of transmittance meter also seems important not have the special device of calibrating transmittance meter at present simultaneously; And, require it to have the characteristics of high measurement accuracy as the device of calibrating transmittance meter.

The utility model content

The purpose of the utility model provides a kind of visibility standards device that can calibrate the transmittance meter measuring accuracy.

The utility model adopts following technical scheme: a kind of visibility standards device; Comprise base and be symmetricly set on optical transmitting set and the optical receiver on the base; The light-receiving mouth relative tilt of the light emission port of said optical transmitting set and optical receiver is provided with up; And the light emission port and the edge light-receiving mouth line form the parasitic light path, are positioned at the below that optical transmitting set sends light beam on the said base and are provided with the shadow shield that is used to cut off the parasitic light path.

Said shadow shield rotates through rotating shaft and is assemblied on the base, offers the holding tank that when shadow shield rotates, is used to hold shadow shield on the base, and said rotating shaft is rotated and is assemblied on the base, and said shadow shield fixedly is inserted in the rotating shaft.

Said rotating shaft is provided with at shadow shield and turns to when cutting off the parasitic light via positions detent mechanism to the shadow shield location; Said detent mechanism comprises endwisely slipping and is sleeved on the stop cover near the one of which end position in the rotating shaft, offers on the end end face of stop cover near shadow shield on the breach that cooperates with the shadow shield slide-and-guide, the other end end face and is fixed with the register pin that cooperates with the base inserting that overlaps axial direction extension along stop.

Being positioned at stop in the said rotating shaft is set with the stop cover is applied the stage clip that makes the acting force that register pin moves towards base.

Said rotating shaft is rotated through two axle beds that are rotatably assorted with it and is assemblied on the base, and said axle bed is separately fixed at the cell wall inboard of holding tank, and said register pin cooperates with the base inserting through the axle bed corresponding with it.

Adopt the visibility standards device of said structure; Be symmetrically arranged with optical transmitting set and optical receiver on the base; The light-receiving mouth relative tilt of the light emission port of optical transmitting set and optical receiver is provided with up, and the light beam between that receives of the light beam that sends of optical transmitting set and optical receiver forms sample region, the edge line formation parasitic light path of light emission port and light-receiving mouth like this; Between optical transmitting set and optical receiver, be provided with the shadow shield that blocks the parasitic light path; So just cut off the parasitic light path, optical receiver can not receive parasitic light, has guaranteed the measuring accuracy of visibility standards device.

In addition; Shadow shield rotates through rotating shaft and is assemblied on the base, and offers the holding tank that when shadow shield rotates, holds shadow shield on the base, when the visibility standards device is not worked; Shadow shield is gone in the holding tank; Can prevent that shadow shield from breaking or damaging, effectively protect shadow shield, and convenient the placement and transportation.

Description of drawings

Fig. 1 is the example structure synoptic diagram of the utility model;

Fig. 2 is the shadow shield assembling synoptic diagram among Fig. 1;

Fig. 3 is a shadow shield hidden state synoptic diagram;

Fig. 4 is the fundamental diagram of the utility model.

Embodiment

The embodiment of the visibility standards device of the utility model: shown in Fig. 1-3; The base 2 that comprises square structure; Base 2 upper surfaces are positioned at its left and right end position and are symmetrically arranged with two mount pads 5; Be separately installed with optical transmitting set 1 and optical receiver 11 in two mount pads 5, the light-receiving mouth relative tilt of the light emission port of optical transmitting set 1 and optical receiver 11 is provided with up.The part of the upper surface of base 2 between two mount pads 5 offers groove; Axle bed 8 and back axle bed 6 before the inboard correspondence of the forward and backward cell wall of groove is fixed with; Between two axle beds rotating shaft 4 is installed, fixedly is fitted with the shadow shield 3 that extends along its axial direction in the rotating shaft 4, shadow shield 3 rotates with rotating shaft 4 and is assemblied on the base 2; When shadow shield 3 turns to vertically up the position is duty; When shadow shield 3 turns in the groove, stashed, this groove is as the holding tank that holds shadow shield 3, so that the installation of visibility standards device, placement and transportation.

As shown in Figure 4; The zone of light beam between two mount pads that light beam that optical transmitting set 1 sends and optical receiver 11 receive crosses and forms sample region 10; The upper limb line of light emission port and light-receiving mouth and lower edge line form the path of parasitic light, and in order not influence the formation of sample region 10, said shadow shield 3 is positioned at the below of the light beam that optical transmitting set 1 sends; When shadow shield 3 turned to vertically up the position, shadow shield 3 had cut off the path of parasitic light.

Can locate when making shading 3 plates in running order; Be positioned at front axle seat 8 inner shafts in the said rotating shaft 4 and a stop cover 7 be housed to slip cap; Offer on the end face near shadow shield 3 one ends of stop cover 7 on the end face of the breach that cooperates with shadow shield 3 slide-and-guides, the other end and be fixed with two along its axial direction extension register pin; This breach is joined shadow shield 3 and stop cover 7 cards when shadow shield 3 rotates; Therefore can drive stop cover 7 rotates together; Offer the pilot hole 9 that when shadow shield 3 is in running order, cooperates before said on the axle bed 8, rely on the card of breach and shadow shield 3 to be equipped with and the card of register pin and pilot hole 9 is joined and can be guaranteed that shadow shield 3 locatees when in running order with two register pin insertings, and stop overlap be arranged with in 7 to stop overlap 7 apply the acting force that moves towards preceding axle bed 8 stage clip.

In other embodiments, said shadow shield also can directly be fixed on the base, just is not easy to hiding of shadow shield.

The foregoing description when shadow shield 3 is in running order, has cut off the path of parasitic light in concrete application process; At this moment, the pilot hole 9 of axle bed 8 before register pin is positioned at is when quitting work; Overcoming stage clip acting force promotion stop cover 7 makes register pin break away from pilot hole 9; Shadow shield 3 can not be located, and rotates shadow shield 3 then it is stashed in holding tank, convenient installation, placement and transportation.

Claims

1. visibility standards device; It is characterized in that: comprise base and be symmetricly set on optical transmitting set and the optical receiver on the base; The light-receiving mouth relative tilt of the light emission port of said optical transmitting set and optical receiver is provided with up; And the light emission port and the edge light-receiving mouth line form the parasitic light path, are positioned at the below that optical transmitting set sends light beam on the said base and are provided with the shadow shield that is used to cut off the parasitic light path.

2. visibility standards device according to claim 1; It is characterized in that: said shadow shield rotates through rotating shaft and is assemblied on the base; Offer the holding tank that when shadow shield rotates, is used to hold shadow shield on the base; Said rotating shaft is rotated and is assemblied on the base, and said shadow shield fixedly is inserted in the rotating shaft.

3. visibility standards device according to claim 2; It is characterized in that: said rotating shaft is provided with at shadow shield and turns to when cutting off the parasitic light via positions detent mechanism to the shadow shield location; Said detent mechanism comprises endwisely slipping and is sleeved on the stop cover near the one of which end position in the rotating shaft, offers on the end end face of stop cover near shadow shield on the breach that cooperates with the shadow shield slide-and-guide, the other end end face and is fixed with the register pin that cooperates with the base inserting that overlaps axial direction extension along stop.

4. visibility standards device according to claim 3 is characterized in that: be positioned at stop in the said rotating shaft and be set with the stop cover is applied the stage clip that makes the acting force that register pin moves towards base.

5. according to claim 3 or 4 described visibility standards devices; It is characterized in that: said rotating shaft is rotated through two axle beds that are rotatably assorted with it and is assemblied on the base; Said axle bed is separately fixed at the cell wall inboard of holding tank, and said register pin cooperates with the base inserting through the axle bed corresponding with it.