Method for measuring blackness value of Ringelmann smoke measuring telescope

Abstract

The invention discloses a Ringelmann smoke measuring telescope blackness value measuring method, which is applied to the field of telescope detection and aims to solve the problems of large measuring error and low measuring efficiency in the prior art. The method comprises the following steps: step 1, installing a Ringelmann smoke measurement telescope to be detected on a verification table; 2, a light source is fixed to the objective lens side of the Ringelmann smoke measuring telescope; 3, taking down the Ringelmann smoke measuring telescope eyepiece, and exposing the reticle; 4, mounting a photosensitive sensor on one side, far away from the objective lens, of the reticle; 5, aligning the photosensitive sensor to a blank area of the reticle in the light path of the Ringelmann smoke measuring telescope to obtain a blank transmission light intensity value E; step 6, obtaining a transmitted light intensity value Ei of each region; and 7, obtaining a Ringelmann blackness value Ki through a calculation formula. According to the measurement method, the Ringelmann blackness value defined by the traditional geometric quantity is converted into the measurement method based on the transmission illumination intensity, and rapid and high-precision measurement of the Ringelmann smoke measuring telescope can be achieved.

Description

Technical Field

[0001] The invention relates to a Ringelmann smoke measuring telescope measurement technology, in particular to a Ringelmann smoke measuring telescope blackness value measurement method. Background Art

[0002] The use of Ringelmann smoke measuring telescopes is mainly due to the need for effective monitoring of the blackness of flue gas emitted by fixed pollution sources. With the enhancement of environmental awareness and the development of science and technology, the monitoring and management of flue gas emissions have become particularly important. The Ringelmann smoke measuring telescope is based on the Ringelmann smoke blackness diagram method, and uses a high-quality prism telescope to measure the Ringelmann blackness value of smoke dust at a long distance. A Ringelmann graticule is installed in the optical path of the Ringelmann smoke measuring telescope. The user observes the 0-5 level Ringelmann blackness value graticule in the optical path of the Ringelmann smoke measuring telescope and compares it with the target flue gas to determine the Ringelmann level of the measured flue gas. The definition of the Ringelmann blackness value is the proportion of black stripes to the entire Ringelmann diagram area, where all white is level 0, all black is level 5, black stripes account for 20% of the total area is level 1, 40% is level 2, 60% is level 3, and 80% is level 4. Whether the blackness value of the Ringelmann smoke measuring telescope is accurate will directly affect the environmental protection department's judgment on whether the smoke blackness value is qualified.

[0003] At present, the measurement methods of Ringelmann smoke measuring telescopes are mainly through human eye visual comparison method and universal tool microscope measurement method. Human eye visual comparison method means that the observer places the standard Ringelmann plate at the far end, and the human eye compares the Ringelmann graticule in the light path of the Ringelmann smoke measuring telescope with the standard Ringelmann plate to estimate the Ringelmann black value. This method is simple to operate, but the error is large, and the measurement result is greatly affected by the observer's subjective judgment, experience, light conditions and other factors. The universal tool microscope measurement method means that the observer removes the Ringelmann graticule in the Ringelmann smoke measuring telescope and places it on a universal tool microscope. By measuring the black line width, the ratio of the black part to the total area is calculated to obtain the Ringelmann black value. Although this method has high measurement accuracy, it requires disassembling the Ringelmann smoke measuring telescope and removing the graticule. The implementation process is complicated and the measurement efficiency is low. Summary of the invention

[0004] The purpose of the present invention is to overcome the problems of large measurement error, high operation difficulty, low measurement efficiency, etc. of the existing Ringelmann smoke measuring telescope, and provide a new method for measuring the blackness value of the Ringelmann smoke measuring telescope. Its application can avoid the generation of manual estimation errors, and can also complete the Ringelmann blackness value measurement without disassembling the internal dividing plate of the Ringelmann smoke measuring telescope. It is simple to operate, accurate in data, and high in measurement efficiency.

[0005] The present invention solves the above problems mainly through the following technical solutions: A method for measuring the blackness value of a Ringelmann smoke measuring telescope comprises the following steps: Step 1: Install the Ringelmann smoke detector telescope to be tested on the calibration platform; Step 2: The light source is fixed on the objective side of the Ringelmann smoke detector telescope; Step 3: Remove the eyepiece of the Ringelmann smoke detector telescope to expose the Ringelmann reticle; Step 4: Install the light sensor on the side of the Ringelmann reticle away from the objective lens; Step 5: Align the photosensitive sensor with the blank area of ​​the Ringelmann graticule in the light path of the Ringelmann smoke detector telescope to obtain the blank transmitted light intensity value E ; Step 6: The photosensitive sensor is aimed at the 1st, 2nd, 3rd, and 4th level areas in the light path of the Ringelmann smoke detector telescope to obtain the transmitted light intensity value of each area. E i ; Step 7: Use the blank transmission intensity value obtained E And the transmitted light intensity value of each area E i , the Ringelmann black value is obtained by calculating the formula K i , and judge whether the levels of each Ringelmann diagram in the graticule of the Ringelmann smoke detection telescope are within the allowable error. The present invention is implemented in conjunction with a computer during specific implementation, and a computer is used to complete the collection and processing of the Ringelmann transmitted light intensity. In this way, the present invention converts the Ringelmann blackness value defined by traditional geometric quantities into a measurement method based on the transmitted light intensity, which can realize the rapid and high-precision measurement of the Ringelmann smoke detection telescope.

[0006] Furthermore, in step 2, the light source uses visible white light, and the light source is vertically fixed to one side of the objective lens of the Ringelmann smoke detector telescope. The light shines on the graticule along the optical path of the Ringelmann smoke detector telescope and is transmitted to the photosensitive sensor. There is no strong light interference during the measurement process.

[0007] Furthermore, the fixed photosensitive sensor installed in step 4 is in a straight line with the optical path of the Ringelmann smoke detector telescope to be tested.

[0008] Furthermore, the light-sensitive sensor in step 5 is aligned with the four blank positions of the upper left, upper right, lower left and lower right of the Ringelmann graticule in the light path of the Ringelmann smoke detector telescope in sequence, and the transmitted light intensity is read as A 1 , B 1 , A 2 , B 2 , Blank transmission light intensity value .

[0009] Furthermore, the specific operation steps of step 6 are: collecting the corresponding level of the Ringelmann image transmission light intensity value E iWhen the light sensor is manually moved to the top left, top right, bottom left, bottom right and middle positions of the corresponding level Ringelmann diagram, the transmitted light intensity is read as E i1 , E i2 , E i3 , E i4 and E i5 , corresponding to the area transmitted light intensity value The method of taking the average of multi-point sampling can avoid the gross error of the measurement result caused by the local abnormalities such as uncleanness, line gaps, and local unclearness in the reticle of the inspected Ringelmann smoke measuring telescope. At the same time, when manually moving the photosensitive sensor to select the measurement position, the bad part of the Ringelmann diagram should be avoided to improve the accuracy of the measurement result.

[0010] Furthermore, the formula for calculating the blackness value of the Ringelmann smoke measuring telescope in step 7 is as follows: in K i The Ringelmann blackness value level corresponding to different areas of the Ringelmann smoke measuring telescope reticle; E i is the transmitted light intensity value in different areas of the Ringelmann reticle; E It is the blank transmitted light intensity value corresponding to the blank area of ​​the Ringelmann graticule.

[0011] In summary, the present invention has the following beneficial effects: (1) The present invention uses the transmitted light method to measure the black value of the Ringelmann smoke measuring telescope, which improves the measurement accuracy compared with the traditional human eye observation and estimation method; compared with the method of taking out the graticule from the Ringelmann smoke measuring telescope and using a universal tool microscope to measure the black and white line width and calculate the black and white area ratio, the disassembly of the graticule of the Ringelmann smoke measuring telescope is avoided, thereby improving the measurement efficiency.

[0012] (2) The present invention uses the blank area of ​​the tested Ringelmann smoke detector telescope as the background value during the measurement process, which can effectively avoid the influence of changes in ambient light intensity on the measurement results and improve the measurement accuracy.

[0013] (3) The present invention completes local sampling by manually moving the photosensitive sensor to different positions of the graticule of the Ringelmann smoke detector telescope, and uses local values ​​instead of overall values, thereby reducing the amount of collected data and facilitating the rapid implementation of the algorithm.

[0014] (4) The present invention reduces the influence of local bad images and further improves the accuracy of measurement results by taking the average value from multiple sampling points. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The figure is a flow chart of a specific embodiment of the present invention. DETAILED DESCRIPTION

[0016] The present invention will be further described in detail below in conjunction with embodiments and drawings, but the embodiments of the present invention are not limited thereto.

[0017] Embodiment 1: like Figure 1 As shown, a method for measuring the blackness value of a Ringelmann smoke measuring telescope comprises the following steps: step 1, installing the Ringelmann smoke measuring telescope to be inspected on a calibration platform; step 2, fixing the light source on the objective lens side of the Ringelmann smoke measuring telescope; step 3: removing the eyepiece of the Ringelmann smoke measuring telescope to expose the Ringelmann graticule; step 4: installing a photosensitive sensor on the side of the Ringelmann graticule away from the objective lens; step 5: aligning the photosensitive sensor with a blank area of ​​the Ringelmann graticule in the light path of the Ringelmann smoke measuring telescope to obtain the blank transmitted light intensity value E Step 6: The photosensitive sensor is respectively aimed at the 1st, 2nd, 3rd and 4th level areas in the light path of the Ringelmann smoke detector telescope to obtain the transmitted light intensity value of each area E i ; Step 7: Use the blank transmission intensity value obtained E And the transmitted light intensity value of each area E i , the Ringelmann black value is obtained by calculating the formula K i , and determine whether the levels of each Ringelmann diagram in the reticle of the Ringelmann smoke measuring telescope are within the allowable error.

[0018] In step 1 of this embodiment, the Ringelmann smoke detector telescope to be inspected is installed on the calibration platform. In the specific implementation process, a lifting device is installed on the calibration platform, and a V-groove seat is provided on the top of the lifting device. The Ringelmann smoke detector telescope to be inspected is fixed in the V-groove seat. The lifting device can be adjusted to ensure that the optical path of the Ringelmann smoke detector telescopes of different diameters remains unchanged.

[0019] In step 2 of this embodiment, the light source uses visible white light. In specific applications, the light source can be pre-fixed on a universal cantilever bracket to facilitate the adjustment of the light source perpendicular to one side of the objective lens of the Ringelmann smoke detector telescope, so that the light shines on the graticule along the optical path of the Ringelmann smoke detector telescope and is transmitted to the photosensitive sensor.

[0020] The specific implementation process of step 4 in this embodiment is that the photosensitive sensor is installed on a three-dimensional adjustment mechanism, which is convenient for adjusting the photosensitive sensor and the optical path of the tested Ringelmann smoke detector telescope to be in a straight line, and also convenient for adjusting the photosensitive sensor to align with any measuring position of the graticule.

[0021] The specific implementation process of step 5 in this embodiment is that the photosensitive sensor is aligned with the four blank positions of the upper left, upper right, lower left and lower right of the Ringelmann graticule in the light path of the Ringelmann smoke detection telescope in sequence, and the transmitted light intensity is read respectively. A 1 , B 1 , A 2 , B 2 , Blank transmission light intensity value .

[0022] The specific implementation process of step 6 in this embodiment is to collect the corresponding level of Ringelmann image transmission light intensity value E i When the mobile light sensor is aimed at the top left, top right, bottom left, bottom right and middle positions of the corresponding level Ringelmann diagram, the transmitted light intensity is read as E i1 , E i2 , E i3 , E i4 and E i5 , corresponding to the area transmitted light intensity value .

[0023] In step 7 of this embodiment, the formula for the blackness value of the Ringelmann smoke measuring telescope is as follows: ;in K i The Ringelmann blackness value levels corresponding to different areas of the Ringelmann smoke measuring telescope reticle.

[0024] This embodiment is implemented based on a computer during the specific implementation process. After the tested Ringelmann smoke detector telescope is installed and fixed, the measurement parameters can be set, wherein the specific measurement parameters include the Ringelmann blackness level, the Ringelmann blackness allowable error, etc. In this way, this embodiment determines whether the tested Ringelmann smoke detector telescope is within the allowable error range of the Ringelmann blackness value at the corresponding Ringelmann level.

[0025] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific embodiments of the present invention are limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, other embodiments obtained without departing from the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for measuring the blackness value of a Ringelmann smoke measuring telescope, characterized in that: The following steps are involved: Step 1: Install the Ringelmann smoke detector telescope to be tested on the calibration platform; Step 2: The light source is fixed on the objective side of the Ringelmann smoke detector telescope; Step 3: Remove the eyepiece of the Ringelmann smoke detector telescope to expose the Ringelmann reticle; Step 4: Install the light sensor on the side of the Ringelmann reticle away from the objective lens; Step 5: Align the photosensitive sensor with the blank area of ​​the Ringelmann graticule in the light path of the Ringelmann smoke detector telescope to obtain the blank transmitted light intensity value E ; Step 6: The photosensitive sensor is aimed at the 1st, 2nd, 3rd, and 4th level areas in the light path of the Ringelmann smoke detector telescope to obtain the transmitted light intensity value of each area. E i ; Step 7: Use the blank transmission intensity value obtained E And the transmitted light intensity value of each area E i , the Ringelmann black value is obtained by calculating the formula K i , and determine whether the levels of each Ringelmann diagram in the reticle of the Ringelmann smoke measuring telescope are within the allowable error.

2. The method for measuring the blackness value of a Ringelmann smoke measuring telescope according to claim 1, characterized in that: In step 2, the light source uses visible white light, which is vertically fixed to one side of the objective lens of the Ringelmann smoke detector telescope. The light irradiates the graticule along the light path of the Ringelmann smoke detector telescope and is transmitted to the photosensitive sensor.

3. The method for measuring the blackness value of a Ringelmann smoke measuring telescope according to claim 1, characterized in that: The fixed photosensitive sensor installed in step 4 is in a straight line with the optical path of the Ringelmann smoke detector telescope to be tested.

4. The method for measuring the blackness value of a Ringelmann smoke measuring telescope according to claim 1, characterized in that: In step 5, the light-sensitive sensor is aligned with the four blank positions of the upper left, upper right, lower left and lower right of the Ringelmann graticule in the light path of the Ringelmann smoke detector telescope, and the transmitted light intensity is read as follows: A 1 , B 1 , A 2 , B 2 , Blank transmission light intensity value .

5. The method for measuring the blackness value of a Ringelmann smoke measuring telescope according to claim 1, characterized in that: The specific operation steps of step 6 are: collecting the corresponding level of Ringelmann image transmission light intensity value E i When the light sensor is manually moved to the top left, top right, bottom left, bottom right and middle positions of the corresponding level Ringelmann diagram, the transmitted light intensity is read as E i1 , E i2 , E i3 , E i4 and E i5 , corresponding to the area transmitted light intensity value .

6. The method for measuring the blackness value of a Ringelmann smoke measuring telescope according to claim 1, characterized in that: The formula for calculating the blackness value of the Ringelmann smoke measuring telescope in step 7 is as follows: ， in K i The Ringelmann blackness value levels corresponding to different areas of the Ringelmann smoke measuring telescope reticle.

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