WO2015010485A1

WO2015010485A1 - Automatic anti-dust and anti-pollution device of optical window

Info

Publication number: WO2015010485A1
Application number: PCT/CN2014/076734
Authority: WO
Inventors: 周丹
Original assignee: 南通神华电气有限公司
Priority date: 2013-07-24
Filing date: 2014-05-04
Publication date: 2015-01-29
Also published as: CN103411637B; CN103411637A

Abstract

An automatic anti-dust and anti-pollution device of an optical window. An apparatus configured with an optical window (16), such as an optical receiving and transmitting device (31) like a camera instrument (31), a laser rangefinder, an infrared detector, or an optical sensor, is placed in a sealed protective shell (28), and a wall face of the sealed protective shell (28) opposite to the optical window (16) is set to be a thin-film optical window (14). A thin-film paper (13) configured in the thin-film optical window (14) has a function of automatic update. The technical defect that water supply and gas supply are required for automatic cleaning and maintenance of the existing optical window such as a camera lens or a lens and the device thereof can be effectively overcome. The technical problem that the optical window such as the camera lens or the lens is unable to be cleaned and maintained because the apparatus configured with the optical window is installed in the field or sky, in a particular field or in a dangerous environment is solved.

Description

Automatic dustproof and antifouling device for optical window

The invention relates to an automatic dustproof and antifouling device for an optical window, which utilizes a high light transmissive film paper to cover an optical window such as a lens or a lens, and realizes various kinds of dust, smoke, liquid splash, gas impurities and the like, and a lens and a lens. Isolation of the optical window; at the same time, the high-transparent film paper can be automatically replaced.

Background technique

At present, various types of camera, laser ranging, infrared detection, optical sensors and other light receiving and transmitting devices and devices are used more and more widely, however, in various mines, roadways, factories, vehicles, outdoor and other special fields, etc. In harsh environments, the surface of optical windows such as optical lenses and lenses is often contaminated by dust, smoke, liquid splashes, gas impurities, etc., resulting in: 1. The image taken by the camera is blurred; 2. Laser ranging is not Accurate; 3, infrared detection sensitivity is reduced; 4, optical sensors and other light receiving and transmitting devices and equipment due to lens, lens and window pollution caused by decreased transmittance and can not work properly; 5, the above devices and equipment can not be in the wild, special Use in areas such as hazardous environments where the lens, lens and optical window are cleaned and maintained.

Summary of the invention

The invention aims at the deficiencies of the prior art, and provides an automatic dustproof and antifouling device for an optical window: an optical window such as a lens, a lens, etc. of a light receiving and emitting device and a device such as a camera, a laser ranging, an infrared detecting, an optical sensor, and the like. The film optical window is added to prevent dust, smoke, liquid splash, gas impurities and other contaminants from adhering to and contaminating the optical window surface. In addition, the film paper in the optical window of the film has an automatic updating function.

In order to achieve the above technical purpose, the present invention will adopt the following technical solutions:

An automatic dustproof and antifouling device for an optical window, comprising a sealed protective casing, a controller, a film paper, a paper feeding mechanism, a delivery mechanism; and a device for arranging the optical window is disposed in the sealed protective casing, wherein: the sealing protection a film, a film optical window is disposed on a wall opposite to the optical window, the film optical window is provided with a window paper-feeding mechanism, the window paper-feeding mechanism is provided with a film paper passage; the paper-feeding mechanism includes a paper-feeding roller, The paper take-up reel is positioned and supported in the sealed protective casing; the delivery mechanism includes a delivery reel, the delivery reel is positioned and supported in the sealed protective casing, and the delivery reel is linked with the output end of the rotary drive mechanism The film paper is provided with a travel length mark according to the requirements of the window specification, one end is wound on the paper roll, and the other end is passed through the film paper passage of the window paper-feeding mechanism and wound around the periphery of the paper take-up reel; The device is provided with a start control module for starting the rotary drive mechanism and a stop control module for stopping the rotary drive mechanism; The start command outputted by the module automatically turns on the rotary drive mechanism; the paper machine Instruction manual

A film paper travel length detecting device for sensing a travel length mark provided on the film paper is disposed between the window and the window paper-feeding mechanism, and the controller stops the rotation drive mechanism according to the feedback signal of the film paper travel length detecting device by the stop control module .

As a further improvement of the present invention, the thin film optical window comprises a thin film optical sash and a thin film optical window; the window paper distributing mechanism comprises a film paper guiding component, a film paper pressing piece, which is sequentially disposed between the film optical window and the optical window, and a protective glass sheet; an inner wall of the film optical sash is provided with a film paper guiding unit in a traveling direction of the film paper, the film paper guiding unit is two oppositely disposed film paper guiding members, and each of the film paper guiding members extends in the direction of the film paper The traveling direction is uniform; the film paper pressing piece is fixedly connected with the film optical window frame, and there is a gap between the film paper pressing piece and the film paper guiding component, and the film paper pressing piece is facing the optical window. The pressing piece is through the window, the protective glass piece is connected with the film paper pressing piece, and the protective glass piece can cover the pressing piece through the window; the film paper guiding part, the film paper pressing piece, the film optical window frame are opened along the optical window axis Longitudinal section of similar shape; protective glass sheet, compression sheet through window, film paper compression sheet, film Learning center window and optical windows are in the same line.

As a further improvement of the present invention, a film paper surface cleaning device is disposed between the window paper-feeding mechanism and the paper-receiving mechanism, and the film paper surface cleaning device includes a cleaning work head and a sewage disposal mechanism, and the cleaning operation The head is in contact with the contaminated surface of the film paper, and the sewage disposal mechanism is open at one end. The open end of the sewage disposal mechanism is located below the cleaning work head, and the other end is provided with a sewage outlet, and the sewage outlet is sealed with the end cover.

As a further improvement of the present invention, the paper feeding mechanism and the window paper-feeding mechanism are sequentially provided with a paper-making guide shaft and a paper-feeding wheel; and a paper-feeding mechanism is sequentially disposed between the window paper-feeding mechanism and the paper-receiving mechanism. The delivery paper guide shaft; one end of the film paper is wound on the paper discharge roller of the paper feeding mechanism, and the other end passes through the paper guide shaft, the paper feed wheel, the film paper passage of the window paper-feeding mechanism, and the paper take-up wheel. And the take-up guide shaft is wound around the take-up reel of the delivery mechanism.

As a further improvement of the present invention, the startup control module includes any one of a remote startup module, a local startup module, a timing activation module, and an automatic startup module, or any combination thereof; the controller respectively selects a switch through an operation mode. The remote start module, the local start module, the timed start module, and the automatic start module are connected; when the start control module is a remote start module, the controller is configured with a remote command receiving module, and the remote command receiving module is in communication with the remote command input device. The controller automatically starts the rotation driving mechanism by the remote startup module according to the startup instruction output by the remote instruction input device received by the remote command receiving module; when the startup control module is the local startup module, the local startup module includes a film update button, which is respectively connected to the controller and the rotary drive mechanism, and realizes activation or stoppage of the rotary drive mechanism by opening and closing the film update button; the start control module is started at a time When the block, the controller is configured to time switch, timer switch controller timing information according to the feedback, the rotary drive mechanism automatically opening timing of initiation module; said start control module Instruction manual

When the module is automatically activated, the window paper-feeding mechanism is provided with a film paper contamination level detecting device for detecting the degree of contamination of the film paper facing the film optical window, and the controller passes the feedback information of the film paper contamination level detecting device. The auto start module automatically turns on the rotary drive mechanism.

As a further improvement of the present invention, the film paper contamination level detecting device is a light emitting/receiving sensor.

As a further improvement of the present invention, the rotary drive mechanism includes a drive motor, and the power output end of the drive motor is coupled to the take-up reel by a motor transmission.

As a further improvement of the present invention, the motor transmission device is a worm gear transmission mechanism.

As a further improvement of the present invention, the film paper travel length detecting device is a photoelectric sensor; and the traveling length on the film paper is marked as a cursor.

According to the above technical solution, the present invention has the following advantages over the prior art:

The invention arranges an optical window device (such as a camera, a laser ranging, an infrared detecting, an optical sensor and the like, a light receiving and transmitting device) in a sealed protective casing, and the wall of the sealed protective casing opposite to the optical window Provided as a film optical window, the film paper disposed in the film optical window has an automatic updating function, and thus, the invention can effectively overcome the automatic cleaning and maintenance of the optical window of the existing lens, lens and the like, and the device needs water supply and air supply. Such technical defects have solved the technical problem that the equipment equipped with the optical window is installed in the high field, special field, dangerous environment, etc., which cannot clean and maintain the optical window such as the lens and the lens. In addition, the automatic dustproof and antifouling device of the optical window of the invention has the advantages of reasonable design, versatility, wide application range, small size, compact structure, high automation degree, convenient use and maintenance, and the like.

DRAWINGS

Figure 1 is a schematic longitudinal sectional view of the device.

Figure 2 is a schematic cross-sectional view of the device.

Figure 3 is a schematic view of the optical film window of the device.

In the figure: 1, paper roll; 2, clean film roll; 3, clean film paper; 4, clean film paper travel direction; 5, clean film paper guide shaft; 6, film paper travel length detection device; Signal processing and control circuit board; 8, hair paper tight wheel; 9, clean film paper travel direction; 10, film paper compression film; 11, film paper pollution degree detection device; 12, film paper guide member; 13, film optics Window film paper; 14, film optical window; 15, protective glass; 16, optical window such as lens, lens; 17, film paper surface cleaning device; 18, sewage outlet; 19, contaminated film paper; 20, paper Tight axis; 21, direction of travel of contaminated film paper; 22, delivery guide shaft; 23, contaminated film roll; 24, take-up reel; 25, motor drive; 26, take-up reel rotation direction; , optical window automatic dust and anti-fouling device; 28, sealed protective shell; 29, signal power and control transmission socket; 30, delivery motor; 31, camera (or laser measurement Instruction manual

Distance, infrared detection, optical sensor and other light receiving and transmitting devices and equipment); 32, sealed whole; 33, paper roll rotation direction; 34, film paper travel direction; 35, film paper travel length mark; 36, film paper Pressing plate through window; 37, working mode selection switch; 38, timing time selection switch; 39, film update button.

detailed description

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings illustrate, without limitation, the structural drawings of the preferred embodiments of the invention.

As shown in FIGS. 1 to 3, the automatic dustproof and antifouling device for the optical window of the present invention comprises a sealed protective casing, a controller, a film paper, a paper feeding mechanism, and a delivery mechanism; and the device for arranging the optical window is sealed. In the protective casing, wherein: the sealed protective casing has a film optical window disposed on a wall opposite to the optical window, the film optical window is provided with a window paper-feeding mechanism, and the window paper-feeding mechanism is provided with a film paper passage; a paper mechanism, comprising a paper roll, the paper roll is positioned and supported in the sealed protective casing; the paper take-up mechanism includes a take-up reel, the take-up reel is positioned and supported in the sealed protective casing, and the paper is delivered The reel is connected in linkage with the output end of the rotary drive mechanism; the film paper is provided with a travel length mark according to the requirements of the window specification, one end is wound on the paper roll, and the other end is passed through the film paper passage of the window paper-feeding mechanism. At the periphery of the take-up reel; the controller is provided with a start control module for starting the rotary drive mechanism and a stop for stopping the rotary drive mechanism The controller automatically activates the rotary drive mechanism by activating the start command outputted by the control module; and the film length travel detection for detecting the travel length mark set on the film paper is disposed between the paper feed mechanism and the window paper feed mechanism The device controls the rotation drive mechanism according to the feedback signal of the film paper travel length detecting device through the stop control module. It can be seen that the film paper from the paper roll to the window paper-feeding mechanism is the unused clean film paper, and the film paper from the window paper-feeding mechanism to the take-up reel is the window paper-feeding mechanism. The used, replaced, contaminated film paper; the film paper replacement in the window paper-feeding mechanism is performed by the activation of the rotary drive mechanism.

As a further improvement of the present invention, the thin film optical window comprises a thin film optical sash and a thin film optical window; the window paper distributing mechanism comprises a film paper guiding component, a film paper pressing piece, which is sequentially disposed between the film optical window and the optical window, and a protective glass sheet; an inner wall of the film optical sash is provided with a film paper guiding unit in a traveling direction of the film paper, the film paper guiding unit is two oppositely disposed film paper guiding members, and each of the film paper guiding members extends in the direction of the film paper The traveling direction is uniform; the film paper pressing piece is fixedly connected with the film optical window frame, and there is a gap between the film paper pressing piece and the film paper guiding component, and the film paper pressing piece is facing the optical window. The pressing piece is through the window, the protective glass piece is connected with the film paper pressing piece, and the protective glass piece can cover the pressing piece through the window; the film paper guiding part, the film paper pressing piece, the film optical window frame are opened along the optical window axis Longitudinal section with similar shape; protective glass sheet, compression sheet through window, film paper compression sheet, film optics And the center of the optical window opening are on the same line. Thus Instruction manual

It can be seen that: the film paper pressing piece and the film paper guiding part form a guiding groove, and the film paper passes through the guiding groove; the protective glass piece is slightly larger than the film paper pressing piece through the film paper pressing piece, and the protective glass piece is fixed On the back side of the film paper pressing piece, the film paper is supported to prevent wind or foreign matter from shifting or deforming the film paper in the optical window of the film.

As a further improvement of the present invention, a film paper surface cleaning device is disposed between the window paper-feeding mechanism and the paper-receiving mechanism, and the film paper surface cleaning device includes a cleaning work head and a sewage disposal mechanism, and the cleaning operation The head is in contact with the contaminated surface of the film paper, and the sewage disposal mechanism is open at one end. The open end of the sewage disposal mechanism is located below the cleaning work head, and the other end is provided with a sewage outlet, and the sewage outlet is sealed with the end cover. From this, it is understood that the dirty film paper which has been replaced by the window paper-feeding mechanism is wound up on the take-up reel by the operation of the take-up mechanism after being cleaned by the film paper surface cleaning device. The dirty film paper, which has been cleaned by the film surface cleaning device, such as dust, is discharged through the drain port.

As a further improvement of the present invention, the paper feeding mechanism and the window paper-feeding mechanism are sequentially provided with a paper-making guide shaft and a paper-feeding wheel; and a paper-feeding mechanism is sequentially disposed between the window paper-feeding mechanism and the paper-receiving mechanism. The delivery paper guide shaft; one end of the film paper is wound on the paper discharge roller of the paper feeding mechanism, and the other end passes through the paper guide shaft, the paper feed wheel, the film paper passage of the window paper-feeding mechanism, and the paper take-up wheel. And the take-up guide shaft is wound around the take-up reel of the delivery mechanism. Therefore, the present invention can ensure the smooth progress of the film paper replacement process.

The invention has four working modes: four modes of operation including local control, remote control, timing control and automatic control; each working mode has a corresponding starting module to activate the rotary driving mechanism for film paper replacement. Therefore, the startup control module of the present invention includes any one of a remote startup module, a local startup module, a timing startup module, and an automatic startup module, or any combination thereof; the controller is separately activated by a working mode selection switch. The module, the local starting module, the timing starting module and the automatic starting module are connected, thereby knowing that the working mode selection switch is used for selecting settings of four working modes of film paper updating local control, remote control, timing control and automatic control; When the control module is a remote startup module, the controller is configured with a remote command receiving module, and the remote command receiving module is communicably connected with the remote command input device, and the controller outputs the remote command input device according to the remote command receiving module. a start command, the rotary drive mechanism is automatically turned on by the remote start module; when the start control module is a local start module, the local start module includes a film update button, and the film update button is respectively connected to the controller and the rotary drive Connecting, through the opening and closing of the film update button, realizing the start or stop of the rotary drive mechanism, in the local control work mode, each time the film update button is pressed, the film paper renewal process of the window paper distribution mechanism is completed; When the startup control module is a timing start module, the controller configures a time switch, and the controller automatically starts the rotation drive mechanism according to the timing information fed back by the time switch; the startup control module is an automatic startup module. The window paper-dispensing mechanism is provided for detecting the opposite of the film optical window Instruction manual

The film paper pollution degree detecting device for the degree of contamination of the film paper, the controller automatically turns on the rotation driving mechanism by the automatic start module according to the feedback information of the film paper pollution degree detecting device. In addition, the timing switch may be a timing time selection switch. In the timing control mode, the timing update time of the thin film optical window film 13 is selected, and the timing time selection switch 38 and the sealed protective casing 28 are hermetically assembled.

As a further improvement of the present invention, the film paper contamination level detecting device is a light emitting/receiving sensor. When the film paper is not contaminated, the emitted light will hardly reflect when it penetrates the film paper. When the film paper is contaminated, the emitted light will have a large amount of reflection when it penetrates the contaminated film paper, and the light is emitted/received. The sensor determines the degree of contamination of the film paper according to the amount of light reflected from the film paper.

As a further improvement of the present invention, the rotary drive mechanism includes a drive motor, and the power output end of the drive motor is coupled to the take-up reel by a motor transmission device; the motor drive device is a worm gear drive mechanism.

As a further improvement of the present invention, the film paper travel length detecting device is a photoelectric sensor; and the traveling length on the film paper is marked as a cursor. When the travel length mark (film strip black strip, cursor) travels to the photosensor to block the light in the photosensor, the photosensor detects the black strip of the film paper (travel length mark) and counts it to achieve the length of the film web. Detection.

The working principle of the automatic dustproof and antifouling device of the present invention is:

The delivery motor 30 is started by any of the above-described activation modes, and the motor transmission device 25 drives the delivery reel 24 to rotate and wind the contaminated film paper 19 in the rotation direction 26, and is pulled by the film paper 13 and the clean film paper 3. The paper roll 1 rotates the paper in the rotation direction 33, and the clean film paper 3 travels in the following direction according to the direction of travel of the clean film paper 4, the traveling direction of the film paper 34, and the traveling direction 21 of the contaminated film paper: the clean film paper guide shaft 5, Membrane paper travel length detecting device 6, hair paper tightening shaft 8, film paper pressing piece 10, film paper guiding groove 12, film paper surface cleaning device 17, paper receiving shaft 20, delivery guide shaft 22, and delivery The spool 24 is wound up. In the process, the film paper travel length detecting device 6 detects the film paper travel length mark 35 on the edge of the clean film paper 3, and transmits the detection signal to the signal processing and control circuit board 7, the signal processing and control circuit board 7 is the controller described above; when the signal processing and control circuit board 7 detects the film paper travel length mark 35, the paper take-off motor 30 is turned off to cause the motor drive 25 to lose power, and the take-up reel 24 stops rotating. At the same time, the winding of the contaminated film paper 19 is stopped, the film paper 13 and the clean film paper 3 stop traveling, and the paper roll 1 stops rotating the paper. At this point, the clean film paper 3 enters the film optical window 14 instead of the contaminated film. Paper 13, completes the process of updating the film paper 13 of the film optical window 14 to maintain the camera (or laser receiving, infrared detecting, optical sensor and the like, light receiving and emitting device and device) 12 or the optical window 16 such as a lens or a lens. The transparent and clean optical channel realizes automatic dustproof and anti-fouling of the optical film window.

Claims

claims

1. An automatic dust-proof and anti-fouling device for an optical window, characterized by: including a sealed protective case, a controller, film paper, a paper sending mechanism, and a paper receiving mechanism; the equipment equipped with the optical window is placed in a sealed protective case, in:

In the sealed protective shell, a film optical window is provided on the wall opposite to the optical window. The film optical window is equipped with a window paper distribution mechanism, and the window paper distribution mechanism is provided with a film paper passing channel;

The paper delivery mechanism includes a paper delivery roller, which is positioned and supported in a sealed protective shell;

The paper take-up mechanism includes a take-up reel, which is positioned and supported in a sealed protective shell, and the take-up reel is linked to the output end of the rotary drive mechanism;

The film paper has a travel length mark set according to the window specification requirements, one end is wound on the paper delivery reel, and the other end passes through the film paper passage of the window paper dispensing mechanism and then is wound around the periphery of the take-up reel;

The controller is configured with a start control module for starting the rotational drive mechanism and a braking control module for stopping the rotational drive mechanism;

The controller automatically starts the rotation drive mechanism through the start command output by the start control module;

A film paper travel length detection device for sensing the travel length mark set on the film paper is provided between the paper delivery mechanism and the window paper distribution mechanism. The controller controls the film paper travel length detection device according to the feedback signal of the film paper travel length detection device through the braking control module. Stop the rotating drive mechanism.

2. The automatic dust-proof and anti-fouling device of the optical window according to claim 1, characterized in that: the film optical window includes a film optical window frame and a film optical window; the window paper-matching mechanism includes a film optical window and an optical window arranged in sequence. The film paper guide component, the film paper pressing piece and the protective glass sheet between the windows; the inner wall of the film optical window frame is provided with a film paper guide component along the film paper traveling direction, and the film paper guide component is two oppositely arranged film paper guides components, the extension direction of each film paper guide component is consistent with the traveling direction of the film paper; the film paper pressing piece is fixedly connected to the film optical window frame, and there is a film paper passing between the film paper pressing piece and the film paper guide component gap, the film-paper compression piece is facing the optical window to open a compression piece through window, the protective glass sheet is connected to the film-paper compression piece, and the protective glass sheet can cover the compression piece through window; the film paper guide component, The longitudinal sections of the film-paper pressing piece and the film optical window frame along the axis of the optical window have similar shapes; the centers of the protective glass sheet, the pressing piece through the window, the film-paper pressing piece, the film optical window and the optical window are all on the same straight line. superior.

3. The automatic dust-proof and anti-fouling device for optical windows according to claim 1, characterized in that: a film paper surface cleaning device is provided between the window paper distribution mechanism and the paper delivery mechanism, and the film paper surface is cleaned The device includes a cleaning working head and a sewage discharge mechanism. The cleaning working head is in contact with the contaminated surface of the film paper. One end of the sewage discharging mechanism is set up with an open end. The open end of the sewage discharging mechanism is located under the cleaning working head, and the other end is set with a sewage discharge mechanism. The sewage outlet and the end cover are sealed.

4. The automatic dust-proof and anti-fouling device for the optical window according to claim 1, characterized in that: the paper delivery mechanism and the window claims

A paper delivery guide shaft and a paper delivery tightening wheel are arranged in sequence between the paper distribution mechanism; a paper delivery tightening wheel and a paper delivery guide shaft are arranged in sequence between the window paper distribution mechanism and the paper delivery mechanism; one end of the film paper is wrapped around the paper delivery mechanism On the paper delivery roller, the other end passes through the paper delivery guide shaft, the paper delivery tension wheel, the film paper passage channel of the window paper distribution mechanism, the paper take-up tension wheel and the paper take-up guide shaft, and then winds around the take-up paper of the take-up mechanism on the reel.

. The automatic dust-proof and anti-fouling device for optical windows according to claim 1, characterized in that: the startup control module includes any one of a remote startup module, a local startup module, a timed startup module and an automatic startup module, or any of them. Any combination of; The controller is connected to the remote start module, the local start module, the timing start module and the automatic start module respectively through the working mode selection switch; When the start control module is a remote start module, the controller is configured to receive remote instructions module, the remote command receiving module is communicatively connected to the remote command input device, and the controller automatically starts the rotation drive mechanism through the remote start module according to the starting command output by the remote command input device received by the remote command receiving module; When the startup control module is a local startup module, the local startup module includes a membrane update button. The membrane update button is connected to the controller and the rotation drive mechanism respectively. By opening and closing the membrane update button, the rotation drive mechanism is started or stopped; When the startup control module is a timing startup module, the controller is configured with a timing switch, and the controller automatically turns on the rotation drive mechanism through the timing startup module according to the timing information fed back by the timing switch; when the startup control module is an automatic startup module , the window paper distribution mechanism is equipped with a film paper contamination level detection device for detecting the film paper contamination level facing the film optical window, and the controller automatically starts through the automatic start module based on the feedback information from the film paper contamination level detection device. Rotary drive mechanism.

. The automatic dust-proof and anti-fouling device for the optical window according to claim 5, characterized in that: the film paper pollution degree detection device is a light emission/reception sensor.

. The automatic dust-proof and anti-fouling device for the optical window according to claim 1, characterized in that: the rotation drive mechanism includes a drive motor, and the power output end of the drive motor is linked to the paper take-up reel through a motor transmission device. . The automatic dust-proof and anti-fouling device for the optical window according to claim 7, characterized in that: the motor transmission device is a worm gear transmission mechanism.

. The automatic dust-proof and anti-fouling device for the optical window according to claim 1, characterized in that: the film paper travel length detection device is a photoelectric sensor; and the travel length mark on the film paper is a cursor.