Electrical device for monitoring capacitance safety

Abstract

The invention discloses an electrical device for monitoring the safety of a capacitor, which comprises a circuit board, the circuit board is provided with a resistor, a capacitor body and other components, the outer surface of the capacitor body is provided with a color-changing shell, the color-changing shell is an ABS plastic shell, and a reversible temperature-sensing color is added to the color-changing shell before injection molding; the visual monitoring system is used for monitoring the color change of the color-changing shell; and the equipment control system is electrically connected with the visual monitoring system. The visual monitoring system monitors the capacitor on the circuit board of the electrical equipment, when the color-changing shell on the outer surface of the capacitor changes color, the visual monitoring system is connected with the equipment control system, so that the electrical equipment is shut down to guarantee safety, the capacitor is a passive component, heating is not serious, and therefore after the electrical equipment is shut down and returns to the normal temperature, the electrical equipment can work normally. And the capacitor and the electrical equipment are still in an intact state, so that the operation of the equipment can be recovered without maintenance, and the production efficiency of a factory is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of electrical equipment safety protection, and in particular relates to electrical equipment for monitoring capacitor safety. Background Art

[0002] There are many safety assurance schemes for electrical equipment, such as fuse protection, electrical signal detection, mechanical action detection, etc. There is also a temperature detection scheme. Temperature sensors are installed on key components of electrical equipment. When the temperature exceeds the standard, the power supply of the equipment can be cut off to ensure the safety of the equipment.

[0003] However, most of these safety assurance plans are destructive protection measures. Electrical equipment needs to be inspected and repaired after shutdown, and damaged parts need to be replaced before the electrical equipment can be put into use again, which affects the production efficiency of the factory. Summary of the invention

[0004] The present invention aims at solving the problems in the prior art and proposes the following technical solutions:

[0005] Electrical equipment used to monitor capacitor safety, including:

[0006] A circuit board, wherein the circuit board is installed with components such as a resistor and a capacitor body, and the outer surface of the capacitor body is provided with a color-changing shell, and the color-changing shell is an ABS plastic shell, and a reversible temperature-sensitive coloring agent is added to the color-changing shell before injection molding;

[0007] A visual monitoring system, the visual monitoring system is used to monitor the color change of the color-changing shell;

[0008] An equipment control system, wherein the equipment control system is electrically connected to the visual monitoring system;

[0009] When electrical equipment operates abnormally and generates high temperature inside, the color-changing casing exceeds the set warning temperature and the outer surface changes color. After the visual monitoring system observes the color change of the casing, it communicates with the equipment control system to control the electrical equipment to shut down to ensure safety.

[0010] As a preferred embodiment of the above technical solution, the reversible thermochromic pigment is a thermochromic powder, and the thermochromic powder is a particle with a diameter of 2 μm to 7 μm.

[0011] As a preferred embodiment of the above technical solution, the interior of the thermochromic powder is a color-changing substance, and the outer side is a transparent shell, and the thickness of the transparent shell is 0.2 μm to 0.5 μm.

[0012] As a preferred embodiment of the above technical solution, the color-changing shell is light in normal working state and turns into dark after exceeding the warning temperature.

[0013] As a preferred embodiment of the above technical solution, the color-changing housing warning temperature is set to +55°C to +75°C according to the load of the electrical equipment.

[0014] As a preferred embodiment of the above technical solution, the visual monitoring system includes:

[0015] A high temperature resistant camera, wherein the high temperature resistant camera is used to capture a color image of a monitored object;

[0016] A light source compensation unit, which is used to provide uniform illumination and reduce the interference of ambient light on color measurement;

[0017] An image processing unit configured with a color analysis algorithm capable of analyzing captured images in real time and comparing actual colors with preset standard colors, taking into account color changes under high temperature conditions;

[0018] A data processing unit, the data processing unit is used to record and process image data, and provide real-time monitoring, color change alarm and data recording functions;

[0019] A temperature control unit is used to maintain the temperature of the monitoring area within a specified range to improve the measurement accuracy of the system.

[0020] As a preferred embodiment of the above technical solution, the light source compensation unit includes an optical filter, and the optical filter has a function of adjusting light intensity to compensate for light changes in a high temperature environment.

[0021] As a preferred embodiment of the above technical solution, the temperature control unit includes:

[0022] A temperature sensor, wherein the temperature sensor is used to monitor and adjust the temperature of the monitoring area;

[0023] A cooling device, which includes an air cooling structure or a liquid cooling structure, is used to reduce the temperature of the monitoring area to keep the system within a suitable operating temperature range.

[0024] The beneficial effects of the present invention are:

[0025] 1. The present invention monitors the capacitor on the circuit board of the electrical equipment through a visual monitoring system. When the discolored outer shell on the outer surface of the capacitor changes color, the visual monitoring system contacts the equipment control system to shut down the electrical equipment to ensure safety. Since the capacitor itself is a passive component, the heat generation is not serious. Therefore, after the electrical equipment is shut down and returns to normal temperature, the capacitor and the electrical equipment are still in good condition, and the operation of the equipment can be restored without maintenance, thereby improving the production efficiency of the factory;

[0026] 2. The visual monitoring system of the present invention uses a high-temperature resistant camera, a light source compensation unit, an image processing unit, a data processing unit and a temperature control unit, so that the system can not only work stably under high temperature conditions, but also accurately and in real time monitor the color changes of the color-changing shell on the outer surface of the capacitor, and detect potential faults in time, thereby significantly improving the safety and reliability of the operation of electrical equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 What is shown is a schematic diagram of the structure of an electrical device for monitoring capacitor safety in an embodiment;

[0028] Figure 2 The structure diagram of the thermochromic powder in the embodiment is shown;

[0029] Figure 3 Shown is a schematic diagram of a visual monitoring system in an embodiment;

[0030] Figure 4 Shown is a schematic diagram of a light source compensation unit in an embodiment;

[0031] Figure 5 Shown is a schematic diagram of a temperature control unit in an embodiment.

[0032] Description of reference numerals:

[0033] 100. Drive motor; 200. Circuit board; 300. Resistor; 400. Capacitor body; 500. Color-changing shell; 510. Temperature-sensitive color-changing powder; 511. Color-changing substance; 512. Transparent shell; 600. Visual monitoring system; 610. High-temperature resistant camera; 620. Light source compensation unit; 621. Optical filter; 630. Image processing unit; 640. Data processing unit; 650. Temperature control unit; 651. Temperature sensor; 652. Cooling device; 700. Equipment control system. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0035] Example 1

[0036] like Figure 1As shown, the electrical equipment for monitoring the safety of capacitors includes a drive motor 100, a circuit board 200, a visual monitoring system 600 and an equipment control system 700 installed in the electrical equipment. The circuit board 200 is installed with components such as a resistor 300 and a capacitor body 400. The outer surface of one or more capacitor bodies 400 is provided with a color-changing shell 500. The color-changing shell 500 is an ABS plastic shell. A reversible temperature-sensitive pigment is added to the color-changing shell 500 before injection molding. The visual monitoring system 600 is used to monitor the color change of the color-changing shell 500. The equipment control system 700 is electrically connected to the visual monitoring system 600.

[0037] Specifically, when the electrical equipment operates abnormally and generates high temperature inside, the color-changing shell 500 exceeds the set warning temperature and the color of the outer surface changes. After the visual monitoring system 600 observes the color change of the color-changing shell 500, it communicates with the equipment control system 700 to control the electrical equipment to shut down to ensure safety. Since the capacitor body 400 itself is a passive component and the heat generation is not serious, after the electrical equipment is shut down and returns to normal temperature, the capacitor body 400 and the electrical equipment are still in good condition, and the operation of the equipment can be restored without maintenance.

[0038] like Figure 2 As shown, the reversible thermochromic pigment is a thermochromic powder 510, which is made of thermosensitive pigment powder or thermochromic liquid crystal powder. The thermochromic powder 510 is a particle with a diameter of 2μm to 7μm. The interior of the thermochromic powder 510 is a color-changing substance 511, which is made of chemical color-changing material and can change color at a temperature below 80°C. The outside is a transparent shell 512, and the thickness of the transparent shell 512 is 0.2μm to 0.5μm.

[0039] Specifically, the color-changing housing 500 is light in normal working state, and turns into a dark color after exceeding the warning temperature, changing from white to red, yellow, blue, black and other colors. It can return to the original color after the equipment is shut down and cooled.

[0040] like Figure 1 and Figure 2 As shown, since the color-changing material 511 has its temperature operating limit, when the temperature exceeds +80°C, its color change will be irreversible, and it cannot return to the original color after the temperature is lowered. Generally, the operating temperature cannot exceed +75°C. In the present invention, the warning temperature of the color-changing shell 500 is set to +55°C to +75°C according to the load of the electrical equipment, preferably +55°C, +60°C, +65°C, +70°C, +75°C.

[0041] Example 2

[0042] like Figure 1 and Figure 3As shown, an electrical device for monitoring capacitor safety, compared with the first embodiment, the visual monitoring system 600 of this embodiment includes: a high temperature resistant camera 610, a light source compensation unit 620, an image processing unit 630, a data processing unit 640 and a temperature control unit 650, the high temperature resistant camera 610 is used to capture the color image of the monitored object, the light source compensation unit 620 is used to provide uniform lighting and reduce the interference of ambient light on color measurement, the image processing unit 630 is configured with a color analysis algorithm, the color analysis algorithm can analyze the captured image in real time and compare the difference between the actual color and the preset standard color, and consider the color change under high temperature conditions, the data processing unit 640 is used to record and process image data, provide real-time monitoring, color change alarm and data recording functions, the temperature control unit 650 is used to maintain the temperature of the monitoring area within a specified range to improve the measurement accuracy of the system.

[0043] Specifically, the high temperature resistant camera 610 uses materials and heat dissipation design with high temperature tolerance, and can work stably in a high temperature environment of up to 500°C. Its resolution is 4K, ensuring that subtle color changes can be clearly captured. This high temperature resistance not only extends the service life of the camera, but also improves the overall stability and reliability of the visual monitoring system 600. Through the real-time monitoring of the visual monitoring system 600, the color changes of the color-changing shell 500 can be accurately monitored, effectively improving the reliability and accuracy of equipment fault detection.

[0044] like Figure 4 As shown, the light source compensation unit 620 includes a cold light source and an optical filter 621 with a temperature compensation function. The optical filter 621 has a function of adjusting light intensity to compensate for light changes in a high temperature environment.

[0045] Specifically, the cold light source avoids the influence of high temperature on the light source, and the optical filter 621 adjusts the light intensity to ensure that the interference of ambient light on color measurement is minimized, effectively reducing the interference of ambient light on color measurement. The uniform lighting condition ensures the consistency of image capture and reduces the color error caused by uneven lighting, thereby improving the accuracy of color detection.

[0046] like Figure 5As shown, the temperature control unit 650 includes a temperature sensor 651 and a cooling device 652. The temperature sensor 651 is a DS18B20 model, which is suitable for measurements in the range of -55°C to +125°C with an accuracy of ±0.5°C. The temperature sensor 651 is used to monitor and adjust the temperature of the monitoring area. The cooling device 652 includes an air-cooling structure or a liquid-cooling structure, which is used to reduce the overall temperature of the visual monitoring system 600 to keep the system within a suitable operating temperature range, thereby avoiding the influence of high temperature on the measurement accuracy. A stable temperature environment helps to improve the overall measurement accuracy of the system and ensure the consistency and reliability of the monitoring data.

[0047] Working principle: Start the high temperature camera 610 and the light source compensation unit 620 to ensure that the light source evenly illuminates the monitoring area, and adjust the parameters of the high temperature camera 610 to adapt to the current environmental conditions. The high temperature camera 610 captures the real-time image of the surface of the color-changing housing 500. The image processing unit 630 analyzes the captured image and compares the difference between the actual color and the preset standard color. The data processing unit 640 records the image data and uses the color analysis algorithm for real-time processing. When a color change is detected, from a light color in a normal working state to a dark color, the system issues an alarm and communicates with the equipment control system 700 to control the electrical equipment to shut down. To ensure safety, the temperature control system continuously monitors the temperature and adjusts the temperature through the cooling device 625 to ensure that the temperature of the monitoring area is maintained within a reasonable range to avoid affecting the system performance. The system successfully realizes real-time monitoring of the safety of the capacitor body 400 in a high temperature environment. Through precise color change analysis and environmental control, the reliability and accuracy of the color detection of the color-changing shell 500 can be effectively improved. Since the capacitor body 400 itself is a passive component and the heat generation is not serious, after the electrical equipment is shut down and the normal temperature is restored, the capacitor body 400 and the electrical equipment are still in good condition, and the equipment can be restored to operation without maintenance.

[0048] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. An electrical device for monitoring capacitor safety, characterized in that: include: A circuit board (200), wherein the circuit board (200) is installed with components such as a resistor (300) and a capacitor body (400), wherein the outer surface of the capacitor body (400) is provided with a color-changing shell (500), wherein the color-changing shell (500) is an ABS plastic shell, and a reversible temperature-sensitive coloring agent is added to the color-changing shell (500) before injection molding; A visual monitoring system (600), the visual monitoring system (600) is used to monitor the color change of the color-changing housing (500); A device control system (700), wherein the device control system (700) is electrically connected to the visual monitoring system (600); When the electrical equipment operates abnormally and generates high temperature inside, the color-changing shell (500) exceeds the set warning temperature and the color of the outer surface changes. After the visual monitoring system (600) observes the color change of the color-changing shell (500), it communicates with the equipment control system (700) to control the electrical equipment to shut down to ensure safety.

2. The electrical device for monitoring capacitor safety according to claim 1, characterized in that: The reversible thermochromic pigment is a thermochromic powder (510), and the thermochromic powder (510) is a particle with a diameter of 2 μm to 7 μm.

3. The electrical device for monitoring capacitor safety according to claim 2, characterized in that: The interior of the thermochromic powder (510) is a color-changing substance (511), and the exterior is a transparent shell (512), wherein the thickness of the transparent shell (512) is 0.2 μm to 0.5 μm.

4. The electrical device for monitoring capacitor safety according to claim 2 or 3, characterized in that: The color-changing housing (500) is light in color in a normal working state, and changes to a dark color after exceeding the warning temperature.

5. The electrical device for monitoring capacitor safety according to claim 4, characterized in that: The warning temperature of the color-changing housing (500) is set to +55°C to +75°C according to the load of the electrical equipment.

6. The electrical device for monitoring capacitor safety according to claim 1, characterized in that: The visual monitoring system (600) comprises: A high temperature resistant camera (610), the high temperature resistant camera (610) being used to capture a color image of a monitored object; A light source compensation unit (620), the light source compensation unit (620) is used to provide uniform illumination and reduce interference of ambient light on color measurement; An image processing unit (630) configured with a color analysis algorithm capable of analyzing the captured image in real time and comparing the difference between the actual color and the preset standard color, and taking into account the color change under high temperature conditions; A data processing unit (640), the data processing unit (640) is used to record and process image data, and provide real-time monitoring, color change alarm and data recording functions; A temperature control unit (650) is used to maintain the temperature of the monitoring area within a specified range to improve the measurement accuracy of the system.

7. The electrical device for monitoring capacitor safety according to claim 6, characterized in that: The light source compensation unit (620) comprises an optical filter (621), and the optical filter (621) has the function of adjusting light intensity to compensate for light changes in a high temperature environment.

8. The electrical device for monitoring capacitor safety according to claim 6, characterized in that: The temperature control unit (650) comprises: A temperature sensor (651), the temperature sensor (651) is used to monitor and adjust the temperature of the monitoring area; A cooling device (652), wherein the cooling device (652) includes an air cooling structure or a liquid cooling structure, and is used to reduce the temperature of the monitoring area to keep the system within a suitable operating temperature range.

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