Remote detection device for visual dust suppressant
The remote detection device, which adjusts the intensity of the excitation light through an intelligent control module, solves the problem of inaccurate remote monitoring in existing detection equipment, and achieves efficient and accurate detection of dust suppressants in railway coal transportation, ensuring the safety and reliability of the detection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN AGRICULTURAL UNIVERSITY
- Filing Date
- 2025-07-24
- Publication Date
- 2026-05-15
AI Technical Summary
Existing visual dust suppressant detection equipment is difficult to achieve remote real-time monitoring, has inaccurate optical path calibration, insufficient excitation energy, and a high signal misjudgment rate, thus failing to meet the high-efficiency and accurate detection requirements of railway coal transportation.
A remote detection device for visual dust suppressants, employing an intelligent control module to adjust the intensity of excitation light, optimizes the optical path using an excitation and receiving module, and combines a photoelectric conversion device and a wireless module to achieve remote real-time monitoring of fluorescence signals. It is powered by solar energy, and an environmental sensor assists in adjusting the excitation light power.
It enables remote real-time monitoring, ensures precise optical path calibration, reduces signal misjudgment rate, guarantees detection accuracy, and is safe, efficient, energy-saving, and environmentally friendly.
Smart Images
Figure CN224247594U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of fluorescent material excitation and emission, and in particular to a visual dust suppressant detection device. Background Technology
[0002] Coal dust pollution has always been a major concern in railway coal transportation. During long-distance transport, coal is highly susceptible to dust pollution due to airflow and vibration generated by trains, as well as complex weather conditions along the railway line (such as strong winds and sandstorms). Coal dust not only wastes resources and reduces the economic efficiency of coal transportation, but also causes serious damage to the environment and ecology along the railway line, such as soil compaction, vegetation damage, and even affecting the quality of life and health of nearby residents. Therefore, in order to reduce environmental pollution and resource loss caused by coal dust during railway coal transportation, dust suppressants are usually sprayed on the surface of the coal to form a covering film to suppress dust. However, dust suppressants are often colorless or light-colored transparent liquids and lack specific optical color development functions. Traditional detection methods mostly rely on manual close-range detection. Detection personnel need to evaluate the coverage and film-forming effect of the dust suppressant by visual observation or simple tools when the train is stopped. This method is not only extremely inefficient and unable to meet the large-scale, high-frequency testing needs of railway transportation, but also poses significant safety risks when operating around trains and cannot achieve real-time monitoring of the dust suppressant status.
[0003] Therefore, some researchers have proposed using fluorescent agents to synthesize visual dust suppressants. However, the detection of visual dust suppressants in railway coal transportation still faces many challenges. Existing fluorescence detection equipment struggles to achieve remote real-time monitoring, often requiring close-range detection; existing detection equipment suffers from inaccurate optical path calibration, and the excitation light source experiences severe scattering and loss during transmission, resulting in insufficient excitation energy and difficulty in accurately exciting the dust suppressant's fluorescence signal; the receiving module has limited ability to capture and process weak fluorescence signals, and in complex scenarios with uneven dust suppressant distribution and low concentrations, it is easily interfered with by the excitation light, leading to a high signal misjudgment rate. These problems severely affect the accurate assessment of dust suppression effects, making it difficult to guarantee the effectiveness and reliability of dust suppression work in railway coal transportation. Therefore, there is an urgent need for an efficient, accurate, and suitable remote detection technology for visual dust suppressants applicable to railway coal transportation scenarios to address the shortcomings of existing detection methods. Utility Model Content
[0004] To address the aforementioned technical problems, this utility model proposes a remote detection device for visual dust suppressants. The device receives remote commands via an intelligent control module, adjusts the light intensity using an excitation light-assisted adjustment device, and emits an excitation light source optimized by a collimation system from the excitation module to excite the dust suppressant. The receiving module collects the fluorescence and detects the signal through a long-pass filter and a single-photon-level photoelectric conversion device. The data is then processed by the intelligent control module and transmitted back via a wireless module. Simultaneously, solar power is used, and an environmental sensor assists in adjusting the excitation light power, enabling remote real-time monitoring of visual dust suppressants and ensuring the detection accuracy of the fluorescence signal.
[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows:
[0006] A remote detection device for visual dust suppressants includes an excitation module, a receiving module, an intelligent control module, and an excitation light auxiliary adjustment device, all housed within a metal casing. The excitation module, receiving module, and excitation light auxiliary adjustment device are all connected to the intelligent control module. The intelligent control module receives remote control commands, the excitation light auxiliary adjustment device positions the dust suppressant and assists in adjusting the excitation light intensity, the excitation module emits an excitation light source to excite the dust suppressant, the receiving module receives the excitation fluorescence emitted by the dust suppressant and detects the fluorescence signal, and the intelligent control module transmits the signal detection data back.
[0007] Specifically, the excitation module includes an adjustable LED array and a collimation system, both of which are connected to the intelligent control module.
[0008] Specifically, the receiving module includes a receiving lens, a long-pass filter, and a photoelectric conversion device. The long-pass filter is coaxially embedded at the exit end of the receiving lens. The exit end face of the filter is optically aligned with the photosensitive surface of the photoelectric conversion device. The photoelectric conversion device is communicatively connected to the intelligent control module.
[0009] Specifically, the excitation light-assisted adjustment device includes a visible red light ranging sensor, which is connected to the intelligent control module.
[0010] Specifically, the collimation system includes a narrowband excitation filter, a light-collecting lens, and a light-diffusing plate arranged in sequence. The emitting end of each LED in the LED array is attached to the narrowband excitation filter, the emitting end of the narrowband excitation filter is connected to the light-collecting lens, and the output end of the light-collecting lens is coaxially connected to the incident surface of the light-diffusing plate.
[0011] Specifically, the photoelectric conversion device includes a SPAD detector and a TCSPC module connected in sequence, and both the TCSPC module and the SPAD detector are communicatively connected to the intelligent control module.
[0012] Specifically, the intelligent control module includes an FPGA control board and a wireless module. The FPGA control board is connected to the LED array, the visible red light ranging sensor, the TCSPC module, the SPAD detector, and the wireless module, respectively.
[0013] Specifically, the intelligent control module includes a power supply module, which is connected to the FPGA control board. The power supply module supplies power to the visible red light ranging sensor, SPAD detector, TCSPC module, LED array and wireless module through the FPGA main control chip.
[0014] Specifically, the power module is a solar panel charging module, which is connected to the solar panel located on top of the metal casing.
[0015] Specifically, the excitation light-assisted adjustment device also includes a temperature sensor and a humidity sensor, both of which are connected to the FPGA control board.
[0016] The beneficial effects of this invention are as follows: It enables remote real-time monitoring without requiring close-range personnel operation, solving the problems of low efficiency and high safety risks associated with traditional detection methods. Precise optical path calibration reduces light energy scattering loss, ensuring excitation energy and accurately exciting fluorescence signals. It has strong capabilities for capturing and processing weak fluorescence signals, reducing the signal misjudgment rate in complex scenarios and guaranteeing detection accuracy. It can intelligently adjust light intensity and power, uses solar power, is energy-saving and environmentally friendly, and ensures effective and reliable dust suppression. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the structure of this utility model.
[0019] Figure 2 This is a schematic diagram showing the connection of each module of this utility model.
[0020] In the diagram, 1 is the coal seam, 2 is the LED array light output port, 3 is the visible red light ranging sensor, 4 is the receiving lens, 5 is the wireless module, 6 is the temperature sensor, 7 is the humidity sensor, and 8 is the metal casing. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] A remote detection device for visual dust suppressants, such as Figure 1 As shown, in this embodiment, the detection device is 7 meters away from the coal surface sprayed with the visual dust suppressant. The detection device includes an excitation module, a receiving module, an intelligent control module, and an excitation light auxiliary adjustment device, all housed within a metal casing 8. The metal casing 8 is made of aluminum alloy, which has good corrosion resistance and can withstand a certain degree of external environmental erosion, such as humid air and coal dust. The excitation module, receiving module, and excitation light auxiliary adjustment device are all connected to the intelligent control module. The intelligent control module receives remote control commands, the excitation light auxiliary adjustment device locates the dust suppressant and assists in adjusting the excitation light intensity, the excitation module emits an excitation light source to excite the dust suppressant, the receiving module receives the excitation fluorescence emitted by the dust suppressant and detects the fluorescence signal, and the intelligent control module transmits the signal detection data back.
[0023] Specifically, the excitation module includes an LED array and a collimation system, both of which are connected to the intelligent control module. The LED array contains multiple LEDs. The intelligent control module adjusts the LED current and light intensity using a PWM signal while ensuring stable excitation light intensity. The collimation system reduces light energy scattering and loss during transmission by focusing the light, ensuring the excitation energy requirements of the fluorescent signal of the visual dust suppressant. In this embodiment, the visual dust suppressant is an aqueous fluorescent green, corresponding to an LED array wavelength of 532nm. The specific LED array wavelength can be selected according to the fluorescent material in the visual dust suppressant.
[0024] Specifically, the receiving module includes a receiving lens 4, a long-pass filter, and a photoelectric conversion device. The receiving lens 4, with a diameter of 50mm and a focal length of 200mm, is used to collect the fluorescence excited by the visual dust suppressant. The 50mm diameter ensures strong light-gathering ability, which is beneficial for capturing the fluorescence signal. The 200mm focal length allows for focusing the fluorescence at a greater distance, making it suitable for detection scenarios at different distances. The long-pass filter is used to cut off the excitation wavelength and allow the fluorescence wavelength to pass through, avoiding interference from the excitation light on the fluorescence signal and preventing signal misjudgment due to the mixing of excitation light. The photoelectric conversion device is used for... The single-photon level signal detection ensures the accuracy of the returned signal detection. In actual environments, the distribution and concentration of dust suppressants may vary, resulting in different fluorescence intensities. The single-photon level detection capability enables the system to stably and accurately acquire signals in various complex environments and low-concentration detection scenarios, providing reliable data support for the intelligent control module to make accurate judgments and analyses on the dust suppression situation. The output end of the receiving lens 4 is coaxially inlaid with a long-pass filter, and the output end face of the filter is optically aligned with the photosensitive surface of the photoelectric conversion device. The photoelectric conversion device is communicatively connected to the intelligent control module.
[0025] Specifically, the excitation light-assisted adjustment device includes a visible-red light ranging sensor 3 (model BenewakeTF03HZH-D80, 10-meter ranging), which is connected to the intelligent control module. The visible-red light ranging sensor 3 is used for preliminary positioning of the light spot at 7 meters using visual observation and provides real-time feedback on the distance to the end of the visual dust suppressant. Based on this feedback distance, the intelligent control module controls the real-time adjustment of the LED array light intensity.
[0026] Specifically, the collimation system includes a narrowband excitation filter, a focusing lens, and a homogenizing plate arranged sequentially. The narrowband excitation filter is used to filter out unwanted wavelength components in the excitation light emitted from the LED array, making the transmitted light have a narrower bandwidth, thereby obtaining excitation light of a specific wavelength, improving the monochromaticity of the light, meeting the demand for specific wavelength light, effectively suppressing stray light of other wavelengths, avoiding stray light from interfering with subsequent measurements, and improving the purity and quality of the signal. The focusing lens is used to converge the divergent light of the LED into approximately parallel light, increasing the light intensity in the target area. The homogenizing plate is used to transform the Gaussian distributed light spot into a uniformly distributed flat-top light spot, ensuring that the excitation light intensity is uniform at all points on the surface of the dust suppressant. The narrowband excitation filter is attached to the emitting end of the LED array, the emitting end of the narrowband excitation filter is connected to the focusing lens, and the output end of the focusing lens is coaxially connected to the incident surface of the homogenizing plate. The excitation light emitted from the LED array is emitted through the light outlet 2 of the LED array light.
[0027] Specifically, the photoelectric conversion device includes a single-photon avalanche diode detector (SPAD detector, model ACAM TDC-GP22) and a time-correlated single-photon counting module (TCSPC module, model ExcelitasSPCM-AQRH-14) connected in sequence. Both the TCSPC module and the SPAD detector are communicatively connected to the intelligent control module. The SPAD detector is used for fluorescence signal detection, and the TCSPC module is used to receive the electrical pulse signal output by the SPAD detector and accurately measure the time interval from the trigger event to the arrival of the fluorescence photon at the SPAD detector, and to statistically analyze the fluorescence signal time data. The intelligent control module receives the time data output by the TCSPC module, performs real-time processing, such as constructing a histogram to calculate fluorescence lifetime for subsequent processing by external devices, and transmits the results to the external devices.
[0028] Specifically, the intelligent control module includes an FPGA control board (model Lattice iCE40 UltraPlu) and a wireless module 5. The FPGA control board is connected to the LED array, the visible-red light ranging sensor 3, and the SPAD detector wireless module 5, respectively. The FPGA control board coordinates the operation of each module and processes and analyzes the fluorescence data from the TCSPC module. The wireless module 5 transmits the processed and analyzed fluorescence data to external devices. The use of the wireless module 5 greatly expands the application flexibility of the detection device. The adoption of a Sub-GHz wireless module ensures signal propagation capability while improving anti-interference performance and reducing power consumption.
[0029] Specifically, such as Figure 2 As shown, the intelligent control module includes a power supply module connected to the FPGA control board. The power supply module supplies power to the visible red light ranging sensor 3, SPAD detector, TCSPC module, LED array, and wireless module 5 through the FPGA main control chip. Since the SPAD detector and TCSPC module are typically sensitive to power supply noise...
[0030] Specifically, the power module is a solar panel charging module, which is connected to the solar panel located on top of the metal casing 8.
[0031] Specifically, the metal casing 8 is equipped with a temperature sensor 6 and a humidity sensor 7, both of which are connected to the FPGA control board. The FPGA control board adjusts the excitation light power in real time based on the environmental sensor data to compensate for atmospheric attenuation.
[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A remote detection device for visual dust suppressants, characterized in that, It includes an excitation module, a receiving module, an intelligent control module, and an excitation light auxiliary adjustment device, all housed within a metal casing (8). The excitation module, receiving module, and excitation light auxiliary adjustment device are all connected to the intelligent control module. The intelligent control module receives remote control commands, the excitation light auxiliary adjustment device positions the dust suppressant and assists in adjusting the excitation light intensity, the excitation module emits an excitation light source to excite the dust suppressant, the receiving module receives the excitation fluorescence emitted by the dust suppressant and performs fluorescence signal detection, and transmits the signal detection data back through the intelligent control module.
2. The remote detection device for visual dust suppressants according to claim 1, characterized in that, The excitation module includes an adjustable LED array and a collimation system, both of which are connected to the intelligent control module.
3. The remote detection device for visual dust suppressants according to claim 2, characterized in that, The receiving module includes a receiving lens (4), a long-pass filter, and a photoelectric conversion device. The long-pass filter is coaxially embedded at the output end of the receiving lens (4). The output end face of the filter is optically aligned with the photosensitive surface of the photoelectric conversion device. The photoelectric conversion device is communicatively connected to the intelligent control module.
4. The remote detection device for visual dust suppressants according to claim 3, characterized in that, The excitation light-assisted adjustment device includes a visible red light ranging sensor (3), which is connected to the intelligent control module.
5. The remote detection device for visual dust suppressants according to any one of claims 2 to 4, characterized in that, The collimation system includes a narrowband excitation filter, a light-collecting lens, and a light-diffusing plate arranged in sequence. The emitting end of each LED in the LED array is attached to the narrowband excitation filter, the emitting end of the narrowband excitation filter is connected to the light-collecting lens, and the output end of the light-collecting lens is coaxially connected to the incident surface of the light-diffusing plate.
6. The remote detection device for visual dust suppressants according to claim 3 or 4, characterized in that, The photoelectric conversion device includes a SPAD detector and a TCSPC module connected in sequence. Both the TCSPC module and the SPAD detector are communicatively connected to the intelligent control module.
7. The remote detection device for visual dust suppressants according to claim 6, characterized in that, The intelligent control module includes an FPGA control board and a wireless module (5). The FPGA control board is connected to the LED array, the visible red light ranging sensor 3, the TCSPC module, the SPAD detector and the wireless module (5) respectively.
8. The remote detection device for visual dust suppressants according to claim 7, characterized in that, The intelligent control module includes a power supply module, which is connected to the FPGA control board. The power supply module supplies power to the visible red light ranging sensor (3), SPAD detector, TCSPC module, LED array and wireless module (5) through the FPGA main control chip.
9. The remote detection device for visual dust suppressants according to claim 8, characterized in that, The power module is a solar panel charging module, which is connected to the solar panel located on the metal casing (8).
10. The remote detection device for visual dust suppressants according to any one of claims 7 to 9, characterized in that, The excitation light-assisted adjustment device also includes a temperature sensor (6) and a humidity sensor (7), both of which are connected to the FPGA control board.