Online coal quality laser detection system

Abstract

The invention provides an online coal quality laser detection system, and belongs to the technical field of coal quality detection.The online coal quality laser detection system comprises a laser emitting module, a laser receiving module, a laser signal processing module and a laser data display module, a photoelectric detector and an optical filter of the laser receiving module receive and process signals, the signal processing module rapidly and accurately calculates coal quality indexes, errors are low, the data display module visually displays results, the system is installed on a conveying belt, the module position angle is adjustable, precision is high, coal sample changes can be adapted, and standard coal samples are used for calibration. Long-time stable operation is guaranteed, real-time detection can be achieved, the result can be displayed within five seconds, data can be stored for trend analysis, and powerful support is provided for coal production and management.

Description

Technical Field

[0001] The invention belongs to the technical field of coal quality detection, and in particular relates to an online coal quality laser detection system. Background Art

[0002] Coal quality testing is a crucial link in the production, processing and use of coal. However, traditional coal quality testing methods have many defects. Traditional methods often require complex sampling and sample preparation operations on coal samples. The testing process is cumbersome and has a long cycle. Moreover, these methods cannot reflect the changes in coal quality in real time, and it is difficult to meet the needs of efficient and real-time monitoring in the modern coal industry.

[0003] In order to solve the above problems, the present invention provides an online coal quality laser detection system. The system adopts advanced laser technology. Through the coordinated work of a laser transmitting module, a laser receiving module, a signal processing module and a data display module, the system can realize fast and accurate online detection of coal quality. The relevant parameters of coal quality can be obtained in real time without complicated sampling and sample preparation processes, providing strong support for the production and management of the coal industry. Summary of the invention

[0004] The purpose of the present invention is to provide an online coal quality laser detection system, which aims to solve the problems in the prior art that traditional methods often require complex sampling and sample preparation operations on coal samples, the detection process is cumbersome and the cycle is long, and these methods cannot reflect the changes in coal quality in real time, and it is difficult to meet the needs of efficient and real-time monitoring in the modern coal industry.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] An online coal quality laser detection system, characterized by comprising a laser transmitting module, a laser receiving module, a signal processing module and a data display module;

[0007] The laser emission module includes a high-performance laser, which can emit a laser beam with a specific wavelength of 400nm-700nm, and the intensity of the laser beam is not less than 1000mW, and irradiates the coal sample to be tested;

[0008] The laser receiving module includes a photodetector and an optical filter. The response time of the photodetector does not exceed 0.1 milliseconds. The optical filter can effectively filter out stray light and interference signals, wherein the intensity of stray light that can be filtered out accounts for no less than 90%, and receives the laser signal after scattering and absorption by the coal sample;

[0009] The signal processing module adopts an advanced digital signal processing unit, which can process and analyze the received laser signal within 2 seconds, extract the parameters reflecting the coal quality characteristics, and accurately calculate the ash content, moisture content, volatile content and other indicators of the coal sample. The ash content detection error does not exceed 1%, the moisture content detection error does not exceed 0.5%, and the volatile content detection error does not exceed 1.5%;

[0010] The data display module includes an intuitive graphic display unit that can clearly display the test results and related parameters, with a display resolution of no less than 1920×1080.

[0011] As a preferred solution of the present invention, when the system is installed on a coal conveyor belt, the position and angle of the laser transmitting module and the receiving module can be adjusted to ensure that the laser beam is accurately irradiated on the coal sample to be tested, and the adjustment accuracy is not less than 0.1 degrees.

[0012] As a preferred solution of the present invention, the system can be calibrated using a standard coal sample, and the accuracy and reliability after calibration are such that the deviation of the detection result does not exceed the set value within 100 hours of continuous operation.

[0013] As a preferred solution of the present invention, when the coal is running on the conveyor belt for online detection, the detection result can be displayed in real time, and the real-time requirement is to complete the detection and display the result within no more than 5 seconds.

[0014] As a preferred solution of the present invention, the system can store the test results in a database with a storage capacity of not less than 1TB, which is convenient for users to query and analyze. At the same time, statistical analysis can be performed on historical data to understand the changing trend of coal quality and provide reference for production and management.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In this solution, the online coal quality laser detection system can display the detection results in real time when the coal is running on the conveyor belt, and the real-time requirement is to complete the detection and display the results within no more than 5 seconds. This enables coal production enterprises to obtain the latest coal quality information in the shortest time and timely understand the changes in coal quality. Operators can make decisions quickly based on real-time detection results. For example, in the coal processing link, if the ash content, moisture content and other indicators of coal quality can be quickly known, the processing parameters can be adjusted in time to improve product quality, thereby improving production efficiency and quality control level.

[0017] 2. In this solution, the signal processing module in the system adopts an advanced digital signal processing unit, which can process and analyze the received laser signal in no more than 2 seconds, extract parameters reflecting the coal quality characteristics, and accurately calculate the ash, moisture, volatile matter and other indicators of the coal sample. The ash detection error does not exceed 1%, the moisture detection error does not exceed 0.5%, and the volatile matter detection error does not exceed 1.5%. This high-precision detection result provides a scientific basis for coal production and use. High-precision detection helps to carry out more accurate quality control in all aspects of coal production and use. For example, in the coal sales link, coal can be classified and priced according to accurate test results to ensure that product quality meets the corresponding standards.

[0018] 3. In this solution, when the system is installed on the coal conveyor belt, the position and angle of the laser transmitting module and the receiving module can be adjusted with an adjustment accuracy of not less than 0.1 degrees. This enables the system to adapt to the position and state changes of the coal on the conveyor belt, ensuring that the laser beam is accurately irradiated on the coal sample being tested, thereby improving the accuracy and reliability of the detection. The system can be calibrated using standard coal samples. The accuracy and reliability after calibration meet the requirement that the deviation of the detection results does not exceed the set value within 100 hours of continuous operation. This ensures the stability of the system during long-term operation, ensuring that the system can continue to provide accurate detection results, and providing reliable protection for coal production and use. DETAILED DESCRIPTION

[0019] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Example 1

[0021] The present invention provides the following technical solutions:

[0022] An online coal quality laser detection system, characterized by comprising a laser transmitting module, a laser receiving module, a signal processing module and a data display module;

[0023] The laser emission module includes a high-performance laser, which can emit a laser beam with a specific wavelength of 400nm-700nm, and the intensity of the laser beam is not less than 1000mW, and irradiates the coal sample to be tested;

[0024] The laser receiving module includes a photodetector and an optical filter. The response time of the photodetector does not exceed 0.1 milliseconds. The optical filter can effectively filter out stray light and interference signals, wherein the intensity of stray light that can be filtered out accounts for no less than 90%, and receives the laser signal after scattering and absorption by the coal sample;

[0025] The signal processing module adopts an advanced digital signal processing unit, which can process and analyze the received laser signal within 2 seconds, extract the parameters reflecting the coal quality characteristics, and accurately calculate the ash content, moisture content, volatile content and other indicators of the coal sample. The ash content detection error does not exceed 1%, the moisture content detection error does not exceed 0.5%, and the volatile content detection error does not exceed 1.5%;

[0026] The data display module includes an intuitive graphic display unit that can clearly display the test results and related parameters, with a display resolution of no less than 1920×1080.

[0027] In a specific embodiment of the present invention, 1. Overview of the overall system: The online coal quality laser detection system is an innovative coal quality detection solution, which realizes fast and accurate online detection of coal quality through the collaborative work of multiple functional modules.

[0028] 2. Laser emission module: High-performance laser is the core component of the laser emission module. The laser beam with a specific wavelength of 400nm-700nm is carefully selected to produce a specific interaction with the coal sample, thus providing a reliable signal source for subsequent detection.

[0029] The intensity of the laser beam is not less than 1000mW, ensuring that there is enough energy irradiated on the coal sample to produce detectable scattering and absorption phenomena in the coal sample. High-intensity laser beams can improve the sensitivity and stability of detection.

[0030] 3. Laser receiving module: The photodetector has an extremely short response time of no more than 0.1 milliseconds, which enables it to quickly capture the weak laser signal after scattering and absorption by the coal sample. Fast response is essential for real-time online detection, ensuring that the system can process and analyze the signal in a timely manner.

[0031] The optical filter plays a key role in the receiving module. It can effectively filter out stray light and interference signals, of which the intensity of stray light that can be filtered out accounts for no less than 90%. This greatly improves the quality of the signal and reduces the impact of noise on the detection results. Through precise filtering, only useful signals related to coal quality are passed to the subsequent processing module.

[0032] 4. Signal processing module: It adopts advanced digital signal processing unit with efficient computing power and algorithm. It can quickly process and analyze the received laser signal within no more than 2 seconds. This means that the system can complete the entire process from signal acquisition to result output in a short time, meeting the real-time requirements of online detection.

[0033] This module can accurately extract parameters that reflect coal quality characteristics and calculate important indicators such as ash, moisture, and volatile matter of coal samples. The detection error is strictly controlled, with the ash detection error not exceeding 1%, the moisture detection error not exceeding 0.5%, and the volatile matter detection error not exceeding 1.5%, ensuring the accuracy and reliability of the test results and providing a scientific basis for coal production and use.

[0034] 5. Data display module: The intuitive graphic display unit provides users with clear and easy-to-read test results and related parameter displays. The high-resolution display interface of not less than 1920×1080 makes the data clearer and more visible, allowing users to quickly understand the coal quality.

[0035] The intuitive graphical display can help users understand the test results intuitively, and also facilitate data analysis and comparison. Users can easily obtain key information through this module to make timely decisions and adjust production processes.

[0036] Specifically in this solution, when the system is installed on a coal conveyor belt, the position and angle of the laser transmitting module and the receiving module can be adjusted to ensure that the laser beam is accurately irradiated on the coal sample to be tested, and the adjustment accuracy is not less than 0.1 degrees.

[0037] In this embodiment: installing the online coal quality laser detection system on the coal conveyor belt has important practical significance. The position and state of the coal on the conveyor belt may change. In order to ensure that the laser beam is always accurately irradiated on the coal sample to be tested, the design that the position and angle of the laser emitting module and the receiving module can be adjusted is crucial. The high requirement of adjustment accuracy of not less than 0.1 degrees means that the system can be adjusted very finely to adapt to different coal transportation conditions and changes in the position of coal samples. For example, when the speed of the conveyor belt changes or the distribution of coal samples is uneven, the operator can ensure that the laser beam can stably irradiate the key detection area of ​​the coal sample by accurately adjusting the position and angle of the laser emitting module and the receiving module, thereby improving the accuracy and reliability of the detection.

[0038] Specifically in this solution, the system can be calibrated using a standard coal sample, and the accuracy and reliability after calibration meet the requirement that the deviation of the detection result does not exceed the set value within 100 hours of continuous operation.

[0039] In this embodiment: Calibration using standard coal samples is an important step to ensure the accuracy and reliability of the system. The deviation of the test results of the calibrated system does not exceed the set value within 100 hours of continuous operation. This requirement ensures the stability and accuracy of the system during long-term operation. In practical applications, the selection of standard coal samples should be representative and stable, and can accurately reflect the characteristics of different coal qualities. During the calibration process, the system will adjust its own detection algorithm and parameters according to the known parameters of the standard coal sample to ensure that the ash, moisture, volatile matter and other indicators of the coal sample can be accurately measured in actual detection. At the same time, the requirement of continuous operation for 100 hours also tests the durability and stability of the system, ensuring that the system can continue to provide accurate test results in long-term actual use, providing a reliable basis for coal production and use.

[0040] Specifically in this solution, when the coal is running on the conveyor belt for online detection, the detection results can be displayed in real time. The real-time requirement is to complete the detection and display the results within no more than 5 seconds.

[0041] In this embodiment: when the coal is running on the conveyor belt for online detection, the system can complete the detection and display the results in no more than 5 seconds, which is of great significance to coal production and management. In the actual coal production process, the production rhythm is usually fast, and it is necessary to understand the coal quality in time for adjustment and optimization. For example, in the coal processing link, if the ash content, moisture content and other indicators of the coal quality can be quickly known, the processing parameters can be adjusted in time to improve product quality. The real-time requirement of 5 seconds ensures that the operator can obtain the latest test results in the shortest time, so that decisions can be made quickly to improve production efficiency and quality control.

[0042] In this specific solution, the system can store the test results in a database with a storage capacity of no less than 1TB, which is convenient for users to query and analyze. At the same time, it can perform statistical analysis on historical data to understand the changing trend of coal quality and provide reference for production and management.

[0043] In this embodiment: the system can store the test results in a database, and the storage capacity of the database is not less than 1TB, which provides sufficient storage space for a large amount of test data. This allows users to easily query and analyze historical data. Through statistical analysis of historical data, users can understand the changing trend of coal quality and provide important reference for production and management. For example, by analyzing the changes in coal quality over a period of time, the future trend of coal quality can be predicted, and production plans and adjustment measures can be made in advance. At the same time, the storage function of the database also provides a basis for quality traceability, and the cause can be quickly found when quality problems occur. In addition, large-capacity databases can also support more complex data analysis and mining, provide more valuable information for coal production enterprises, and help enterprises achieve intelligent management and optimize production processes.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An online coal quality laser detection system, characterized in that: It includes a laser transmitting module, a laser receiving module, a signal processing module and a data display module; The laser emission module includes a high-performance laser, which can emit a laser beam with a specific wavelength of 400nm-700nm, the intensity of which is not less than 1000mW, and irradiates the coal sample to be tested; The laser receiving module includes a photodetector and an optical filter. The response time of the photodetector does not exceed 0.1 milliseconds. The optical filter can effectively filter out stray light and interference signals, wherein the intensity of stray light that can be filtered out accounts for no less than 90%, and receives the laser signal after scattering and absorption by the coal sample; The signal processing module adopts an advanced digital signal processing unit, which can process and analyze the received laser signal within 2 seconds, extract the parameters reflecting the coal quality characteristics, and accurately calculate the ash content, moisture content, volatile content and other indicators of the coal sample. The ash content detection error does not exceed 1%, the moisture content detection error does not exceed 0.5%, and the volatile content detection error does not exceed 1.5%; The data display module includes an intuitive graphic display unit that can clearly display the test results and related parameters, with a display resolution of no less than 1920×1080.

2. The online coal quality laser detection system according to claim 1, characterized in that: When the system is installed on a coal conveyor belt, the positions and angles of the laser transmitting module and the receiving module can be adjusted to ensure that the laser beam is accurately irradiated on the coal sample to be tested, and the adjustment accuracy is not less than 0.1 degrees.

3. The online coal quality laser detection system according to claim 2, characterized in that: The system can be calibrated using standard coal samples, and the accuracy and reliability after calibration are such that the deviation of the detection result does not exceed the set value within 100 hours of continuous operation.

4. The online coal quality laser detection system according to claim 3 is characterized in that: When the coal is tested online while running on the conveyor belt, the test results can be displayed in real time. The real-time requirement is that the test must be completed and the results displayed within no more than 5 seconds.

5. The online coal quality laser detection system according to claim 4, characterized in that: The system can store the test results in a database with a storage capacity of no less than 1TB, which is convenient for users to query and analyze. At the same time, it can perform statistical analysis on historical data to understand the changing trend of coal quality and provide reference for production and management.