Load detection method, system and device based on high-voltage converter

Abstract

The invention relates to a load detection method, system and device based on a high-voltage converter, and relates to the technical field of high-voltage converters, and the method comprises the steps: obtaining the image detection information of the high-voltage converter; determining an access position according to the image detection information and preset needle features; when the access position coincides with a preset port position, acquiring indication image information; when a preset indication color appears based on the indication image information, continuing to update the indication image information until the indication image information does not appear the indication color; and when the preset indication color does not appear based on the indication image information, outputting preset alarm information through a preset verification method. The method has the effect of improving the test efficiency of the high-voltage converter.

Description

Technical Field

[0001] The present invention relates to the technical field of high-voltage converters, and in particular to a load detection method, system and device based on a high-voltage converter. Background Art

[0002] A high voltage converter is a power electronic device that converts direct current (DC) voltage from one level to another.

[0003] When the high-voltage converter is tested in the research and development stage, the single-machine test stage and the system joint debugging stage, and after the high-voltage converter is disconnected from the power supply, there is still high voltage in the high-voltage converter that has not been released. You can only wait for the voltage inside the high-voltage converter to be slowly released. If you directly perform operations such as plugging and unplugging cables and connecting equipment to the high-voltage converter, the chance of equipment damage increases.

[0004] When the high voltage converter is being tested, waiting for the voltage inside the high voltage converter to be released will waste a lot of time, thereby reducing the test efficiency of the high voltage converter. Summary of the invention

[0005] In order to improve the test efficiency of a high-voltage converter, the present invention provides a load detection method, system and device based on a high-voltage converter.

[0006] In a first aspect, the present invention provides a load detection method based on a high voltage converter, which adopts the following technical solution: A load detection method based on a high voltage converter, comprising: Obtain image detection information of high voltage converter; Determine the access position based on the image detection information and the preset needle features; When the access position coincides with the preset port position, obtaining indication image information; When a preset indication color appears in the indication image information, continue to update the indication image information until the indication color does not appear in the indication image information; When the preset indication color does not appear in the indication image information, the preset warning information is output through the preset verification method.

[0007] By adopting the above technical solution, the access position is obtained through image detection information. When the access position coincides with the port position, an alarm message is output by identifying the display of the indicating color in the indicating image information. Thus, the device can be used to know the charged status of the high-voltage converter and discharge the high-voltage converter, thereby reducing the time waiting for the voltage inside the high-voltage converter to be released, so as to improve the testing efficiency of the high-voltage converter.

[0008] Optional, pre-set authentication methods include: When the preset indication color does not appear in the indication image information, output the preset guidance information and obtain the pressure detection information and the ambient light information of the preset detection device; When the pressure detection information is not 0, the image detection information is updated; Determine the detection angle according to the updated image detection information and the preset support rod features, and update the pressure detection information; When the updated pressure detection information is 0, the marking angle is determined according to the updated pressure detection information and the detection angle; Determine the detection current according to the marking angle; Determine the minimum display current according to the ambient light information and the preset indication light information; When the detected current exceeds the minimum display current, the preset abnormal information is output.

[0009] By adopting the above technical solution, the pressure detection information is analyzed to determine whether it is 0 to obtain the detection current, and the ambient light information and the indicator light information are analyzed to obtain the minimum display current. Abnormal information is output based on the excess of the detection current and the minimum display current, so that it is possible to verify whether the indicator light is damaged through the magnetic adsorption.

[0010] Optionally, the steps before obtaining the pressure detection information also include: Determine the electromagnet specifications according to the preset detection device specifications; Control the preset assembly device to install the electromagnet according to the specifications and obtain the coil winding image; Determine the reference coil image based on the electromagnet specifications; The coil winding image and the reference coil image are inspected by a preset inspection method, and the electromagnet after inspection is installed on the detection device.

[0011] By adopting the above technical solution, the electromagnet is detected through the coil winding image, the reference coil image and the inspection method, so that the probability of damage to the electromagnet can be reduced.

[0012] Optional, pre-set inspection methods include: Determine a reference winding height according to a reference coil image; Determine the winding height according to the coil winding image, and select the winding height exceeding the reference winding height as the marked winding height; Calculate the difference between the marked winding height and the reference winding height as the height deviation value; Determine the abnormal position based on the coil winding image and the marked winding height; Determine the cooling position based on the abnormal position; The cooling temperature and the heating temperature are determined according to the height deviation value and the electromagnet specifications, and the electromagnet is repaired through a preset repair method according to the cooling temperature, the heating temperature, the abnormal position and the cooling position.

[0013] By adopting the above technical scheme, the marked winding height and the reference winding height are analyzed to obtain the abnormal position and the cooling position, and the height deviation value and the electromagnet specification are analyzed to obtain the cooling temperature and the heating temperature, and then the electromagnet is repaired by a repair method to facilitate the subsequent use of the electromagnet and reduce the energy consumption caused by directly discarding the electromagnet.

[0014] Optional, before repairing the electromagnet: Calculate the difference between the cooling temperature and the heating temperature as the temperature deviation value; Determine the reference deviation value according to the electromagnet specifications; When the temperature deviation value exceeds the reference deviation value, the straight-line distance between the abnormal position and the preset coil winding position is calculated as the target distance; The shortest target distance is selected from the target distances as the marking distance, and the coil winding position corresponding to the marking distance is used as the marking winding position; The electromagnet is separated according to the marked winding position and abnormal position, and the coil winding image is updated; The position of the foreign object is determined according to the updated coil winding image and the preset foreign object features, and the blowing device is controlled to blow air at the position of the foreign object, and the electromagnet is reinstalled according to the electromagnet specifications.

[0015] By adopting the above technical solution, the winding position is marked according to the excess of the temperature deviation value and the reference deviation value, and the electromagnet is disassembled according to the marked winding position and the abnormal position, and the foreign matter is blown away, and then the electromagnet is reinstalled to facilitate the subsequent use of the electromagnet and reduce the energy consumption caused by directly discarding the electromagnet.

[0016] Optional, preset repair methods include: Controlling a preset temperature control device to contact the coils at the cooling position and the abnormal position, and controlling the temperature control device at the cooling position to operate at the cooling temperature, and acquiring a coil temperature image; Determine the gap distance based on the coil temperature image, cooling position and preset coil characteristics; Determine the reference gap distance based on the cooling temperature; When the gap distance is consistent with the reference gap distance, the temperature control device at the abnormal position is controlled to operate at the heating temperature; After the temperature control device based on the abnormal position is running, the blowing power is determined according to the height deviation value, and the preset blowing device is controlled to blow the abnormal position with the blowing power; When no foreign body features appear based on the coil temperature image, the knocking force is determined according to the heating temperature and the height deviation value, and the preset knocking device is controlled to knock on the abnormal position with the knocking force.

[0017] By adopting the above technical solution, the gap distance is obtained by analyzing the coil temperature image, cooling position and coil characteristics. When the gap distance is consistent with the reference gap distance, the temperature control device at the abnormal position is controlled to operate at the heating temperature and blow away foreign matter in the coil, thereby minimizing the impact between the heating and cooling temperatures and blowing away foreign matter in the coil by the method of thermal expansion and contraction.

[0018] Optional, pre-set inspection methods include: When no height deviation value appears in the reference coil image, a preset reference current is output to the electromagnet to obtain a magnetic force intensity value; When the magnetic strength value is inconsistent with the preset reference magnetic strength value, the position of the foreign body is determined by a preset magnetic detection method; Determine the marked cooling temperature and the marked blowing power according to the electromagnet specifications, and control the temperature control device to operate according to the marked cooling temperature and the foreign body position; After the temperature control device is running, the detection image is obtained according to the position of the foreign matter; The position of the marked foreign object is determined according to the detected image and the preset foreign object features, and the blowing device is controlled to blow air at the marked blowing power and the marked foreign object position.

[0019] By adopting the above technical solution, the position of the foreign object is obtained based on the consistency between the magnetic strength value and the reference magnetic strength value, and the coil at the foreign object position is cooled to facilitate the blowing out of the foreign object, thereby facilitating the subsequent use of the electromagnet and reducing the energy consumption caused by directly discarding the electromagnet.

[0020] Optionally, the preset inspection method also includes: Determine the detection path and reference magnetic force direction according to the electromagnet specifications, and control the preset magnetic field detection device to run along the detection path; Obtaining the direction of the mark on the magnetic field detection device; When the marking direction is inconsistent with the reference magnetic direction, the marking direction inconsistent with the reference magnetic direction is used as the detection direction; Determine the location of foreign matter based on the detection direction.

[0021] By adopting the above technical solution, the position of the foreign object can be obtained according to the consistency between the marking direction and the reference magnetic force direction, thereby improving the accuracy of the foreign object position.

[0022] In a second aspect, the present application provides a load detection system based on a high voltage converter, which adopts the following technical solution: A load detection system based on a high voltage converter, comprising: An acquisition module, used to acquire image detection information, indication image information, pressure detection information, ambient light information, coil winding image, coil temperature image, magnetic strength value, detection image and marking direction; A memory, used for storing a load detection method based on a high voltage converter; The processor is used to load, execute and implement the program stored in the memory.

[0023] In a third aspect, the present application provides a load detection device based on a high voltage converter, which applies a load detection method based on a high voltage converter as described above, and adopts the following technical solution: A load detection device based on a high-voltage converter comprises a body, an indicator light arranged on the body, a concentric shaft arranged at an end of the body away from the indicator light, a support rod arranged on the concentric shaft, and a metal test needle arranged on the support rod; A spring is arranged on the support rod, and a magnetic device for fixing the metal test needle is arranged at one end of the support rod away from the concentric axis, and a cable for conducting current between the metal test needle and the indicator light is arranged on the metal test needle and the support rod.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. The access position is obtained through image detection information. When the access position coincides with the port position, the display of the indication color in the indication image information is identified to output an alarm message, so that the device can be used to know the charged state of the high-voltage converter and discharge the high-voltage converter, thereby reducing the time for waiting for the voltage inside the high-voltage converter to be released, so as to improve the test efficiency of the high-voltage converter; 2. Analyze whether the pressure detection information is 0 to obtain the detection current, and analyze the ambient light information and the indicator light information to obtain the minimum display current. Output abnormal information based on the excess of the detection current and the minimum display current, so as to verify whether the indicator light is damaged through the magnetic adsorption; 3. The gap distance is obtained by analyzing the coil temperature image, cooling position and coil characteristics. When the gap distance is consistent with the reference gap distance, the temperature control device at the abnormal position is controlled to operate at the heating temperature and blow away foreign matter in the coil, thereby minimizing the impact between the heating and cooling temperatures and blowing away foreign matter in the coil by the method of thermal expansion and contraction. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1It is a structural schematic diagram of a load detection device based on a high voltage converter according to an embodiment of the present invention; Figure 2 is a circuit diagram of a load detection device based on a high voltage converter according to an embodiment of the present invention; Figure 3 is a method flow chart of a load detection method based on a high voltage converter according to an embodiment of the present invention; Figure 4 is a method flow chart of a preset verification method of an embodiment of the present invention; Figure 5 is a flow chart of a method before obtaining pressure detection information according to an embodiment of the present invention; Figure 6 The method flow of the preset inspection method of the embodiment of the present invention is Figure 1 ; Figure 7 is a flow chart of a method before repairing an electromagnet according to an embodiment of the present invention; Figure 8 is a method flow chart of a preset repair method of an embodiment of the present invention; Fig. 9 The method flow of the preset inspection method of the embodiment of the present invention is Figure 2 .

[0026] The names of the parts indicated by the numerical labels in the above drawings are as follows: 1. Main body; 2. Concentric axis; 3. Support rod; 4. Indicator light; 5. Metal test needle; 6. Cable; 7. Magnetic device; 8. Spring. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0028] Reference Figure 1 A load detection device based on a high-voltage converter includes a main body 1, a concentric shaft 2 arranged on the main body 1, a support rod 3 connected to the concentric shaft 2, an indicator light 4 arranged on the concentric shaft 2, a metal test needle 5 arranged on the support rod 3, a cable 6 for connecting the metal test needle 5 and the indicator light 4, a magnetic attraction device 7 arranged on the support rod 3 for fixing the metal test needle 5, and a spring 8 arranged on the support rod 3.

[0029] Two support rods 3 are provided and open and close synchronously at the same angle with the center of the concentric axis 2. The spring 8 is used to fix the position of the support rod 3 and provide elastic potential energy to drive the support rod 3 to rebound when the operator operates with one hand, thereby facilitating the operator to operate with one hand.

[0030] The indicator light 4 is installed at one end of the concentric shaft 2 away from the support rod 3, and the metal test needle 5 is arranged at the end of the support rod 3 away from the concentric shaft 2 and the needle head of the metal test needle 5 is used to directly contact the positive and negative ports of the high-voltage converter, and the metal test needle 5 corresponds to the support rod 3 one by one.

[0031] When the metal test needle 5 is connected to the support rod 3, the support rod 3 is opened at the maximum angle, and the straight-line distance between the needles of the metal test needle 5 on the support rod 3 is the maximum distance for detection. When the distance between the positive and negative ports of the high-voltage converter exceeds the maximum distance, the operator removes the metal test needle 5 and straightens the cable 6 to update the maximum distance and use it to detect the high-voltage converter.

[0032] The metal test needle 5 is used to conduct the high-voltage converter and the indicator light 4, and the cable 6 is used to pass the current on the metal test needle 5 to the indicator light 4. When the metal test needle 5 is connected to the positive and negative terminals of the high-voltage converter, the indicator light 4 lights up, and when the indicator lights 4 are all off, it means that the high-voltage converter is no longer powered. In this embodiment, the metal test needle 5 can be connected without distinguishing between the positive and negative terminals.

[0033] Reference Figure 2 , a circuit board is arranged on the body 1, and the circuit board includes a metal test pin 5 for conducting current; A Schottky diode connected to the metal test pin 5 to output a high-level detection signal and to prevent the current from flowing in the reverse direction; An NTC thermistor connected to a Schottky diode to receive a high-level detection signal and output a high-level thermal signal, and used to limit an inrush current flowing into the circuit; Varistor, connected with NTC thermistor and used to protect the circuit; A light emitting diode is connected with an NTC thermistor to receive a high-level thermal signal and realize lighting; A current limiting resistor connected to the light emitting diode to receive a high-level thermal signal and to protect the circuit; Tantalum electrolytic capacitors, connected to NTC thermistors and used to store electrical energy and stabilize voltage; Bleeder resistor, connected to the NTC thermistor and used to protect the tantalum electrolytic capacitor and to release the charge; High-voltage fast-acting fuse, connected to the NTC thermistor and used to quickly break the circuit to protect the circuit after the voltage and current exceed the threshold; A power supply, connected to the NTC thermistor to provide current; An electromagnet, used for adsorbing and fixing the metal test needle 5; A switch connected to a power source to control the current output.

[0034] The Schottky diodes include diode D1, diode D2, diode D3 and diode D4 and all are SS14 model, NTC thermistor RT1 and NTC thermistor RT2 are MF52A1473F3950 model, varistor RV1 is 07D470K model, light emitting diode LED1 and light emitting diode LED2 are 0603 model, current limiting resistor R1 can be RY15W model, tantalum electrolyte capacitor C1 and tantalum electrolyte capacitor C2 are TAJA105M016RNJ model, discharge resistor RX1 is RX20-50W-1K model, high-voltage fast-acting fuse F1 is 1032F model high-voltage chip fuse, power supply is power supply VCC, and switch is normally open switch S1.

[0035] The anode of the diode D1, the metal test needle 5, one end of the power supply VCC, the cathode of the diode D2 and one end of the electromagnet are connected, the other end of the power supply VCC is connected to one end of the normally open switch S1, the cathode of the diode D1 is connected to one end of the NTC thermistor RT1, the other end of the NTC thermistor RT1, the anode of the diode D2, one end of the varistor RV1, the cathode of the light-emitting diode LED1, the anode of the light-emitting diode LED2, one end of the tantalum electrolytic capacitor C1 and one end of the discharge resistor RX1 are connected, and the other end of the tantalum electrolytic capacitor C1 is connected to one end of the tantalum electrolytic capacitor C2.

[0036] The anode of the light-emitting diode LED1 and the cathode of the light-emitting diode LED2 are connected to one end of the current-limiting resistor R1, the other end of the current-limiting resistor R1, the other end of the discharge resistor RX1, the other end of the tantalum electrolyte capacitor C2, the other end of the varistor RV1, one end of the NTC thermistor RT2 and the anode of the diode D3 are connected, the other end of the NTC thermistor RT2 is connected to the cathode of the diode D4, the anode of the diode D4, the cathode of the diode D3, and the other end of the electromagnet are connected to one end of the high-voltage quick-break fuse F1, and the other end of the high-voltage quick-break fuse F1 and the other end of the normally open switch S1 are connected to the metal test needle 5.

[0037] When the metal test pin 5 not connected to the high-voltage chip fuse is connected to the positive terminal of the high-voltage converter, current flows out of the NTC thermistor RT1. At this time, the anode of the light-emitting diode LED2 receives the current and is turned on to achieve lighting.

[0038] When the metal test pin 5 connected with the high-voltage chip fuse is connected to the positive terminal of the high-voltage converter, current flows out from the NTC thermistor RT2. At this time, the anode of the light-emitting diode LED1 receives the current and is turned on to achieve lighting.

[0039] When the voltage in the high-voltage converter exceeds the preset voltage threshold of the varistor RV1, the resistance of the varistor RV1 decreases and forms a path with the high-voltage fast-acting fuse F1, and the current directly passes through the high-voltage fast-acting fuse F1 to melt the fuse, thereby forming a short circuit to protect the circuit. In this embodiment, the magnetic attraction device 7 is an electromagnet.

[0040] Reference Figure 3 The present application embodiment discloses a load detection method based on a high voltage converter, comprising the following steps: Step S100: acquiring image detection information of a high voltage converter.

[0041] The image detection information is obtained by taking an image of the high voltage converter through a camera.

[0042] Step S101: Determine the access position according to the image detection information and the preset needle features.

[0043] The detection device is a load detection device based on a high-voltage converter. The needle feature is the shape feature of the needle of the metal test needle 5 on the detection device set by the technician. The access position refers to the position of the needle. The position of the needle feature is identified from the image detection information as the access position. Image recognition is common knowledge for those skilled in the art and will not be described in detail here.

[0044] Step S102: when the access position coincides with the preset port position, obtaining indication image information.

[0045] The port position is the position of the positive and negative ports of the high-voltage converter set by the technician. The indication image information refers to the image of the indicator light 4 on the detection device. When the access position coincides with the port position, it means that the detection device starts to detect the load condition of the high-voltage converter, and the image of the indicator light 4 is captured by the camera as the indication image information.

[0046] Step S103: When the preset indication color appears in the indication image information, continue to update the indication image information until the indication color does not appear in the indication image information.

[0047] The indication color is the color set by the technician to be displayed by the indicator light 4. When the indication image information shows the indication color, it means that the high-voltage converter is energized, and the indication image information is continuously updated until the indication image information does not show the indication color, which means that the voltage in the high-voltage converter has been released.

[0048] Step S104: when the preset indication color does not appear in the indication image information, a preset warning message is outputted through a preset verification method.

[0049] The warning information is set by the technician to warn the operator that the detection device is damaged. The verification method is used to verify whether the high-voltage quick-break fuse F1 is blown. When the indication image information does not show the indication color, it means that the high-voltage converter is not powered or the high-voltage quick-break fuse F1 has been blown. Therefore, the verification method is used to analyze and output the warning information to the terminal held by the operator to prompt the operator that the detection device is damaged.

[0050] When the verification method is used for analysis, the electromagnet is turned on to the power supply VCC by prompting the operator to close the normally open switch S1.

[0051] Reference Figure 4 , the preset verification methods include: Step S200: when the preset indication color does not appear in the indication image information, output the preset guidance information and obtain the pressure detection information and the ambient light information of the preset detection device.

[0052] The guidance information is information set by the technician to prompt the operator to adsorb the metal test needle 5 on the electromagnet and perform an angle offset based on the support rod 3 being vertical to the ground. In this embodiment, the guidance information is output by voice to prompt the operator.

[0053] The pressure detection information refers to the force of the electromagnet adsorbing the metal test needle 5, and the parameters detected by the pressure sensor preset at one end of the electromagnet adsorbing the metal test needle 5 are used as the pressure detection information. The ambient light information refers to the color and intensity value of the ambient light around the high-voltage converter, and the parameter information detected by the light sensor is used as the ambient light information.

[0054] Step S201: When the pressure detection information is not 0, update the image detection information.

[0055] The indication information is set by the technician to remind the operator that the power supply VCC needs to be replaced. When the pressure detection information is 0, it means that the electromagnet does not generate magnetic force through the current, so the indication information is output to the terminal held by the operator.

[0056] When the pressure detection information is not 0, it means that the electromagnet adsorbs the metal test needle 5, and the image detection information is reacquired.

[0057] Step S202: determining a detection angle according to the updated image detection information and preset support rod features, and updating the pressure detection information.

[0058] The support rod feature is the shape feature of the support rod 3 set by the technician. The updated image detection information is used to identify the straight line corresponding to the support rod feature, and it is compared with the vertical line to obtain the detection angle. The pressure detection information is reacquired while the angle of the detection device changes.

[0059] Step S203: when the updated pressure detection information is 0, determine the marking angle according to the updated pressure detection information and the detection angle.

[0060] The marking angle refers to the angle at which the detection device is offset when the metal test needle 5 is not adsorbed on the electromagnet. When the updated pressure detection information is 0, it means that the metal test needle 5 is not adsorbed on the electromagnet, and the detection angle corresponding to the updated pressure detection information of 0 is used as the marking angle.

[0061] Step S204: determining the detection current according to the marking angle.

[0062] The detection current refers to the current that the power supply VCC supplies to the electromagnet. The detection current is matched from the preset current database through the marking angle. The current database contains the corresponding relationship between the marking angle and the detection current. The current database is set manually and will not be described in detail here.

[0063] Step S205: determining a minimum display current according to the ambient light information and the preset indicator light information.

[0064] The indicator light information is parameter information such as the brightness value corresponding to the indicator light 4 when different currents are passed through it, which is set by the technician. The minimum display current refers to the minimum current that can identify the indicator light in the ambient light information. The minimum display current is matched from the preset illumination database through the ambient light information and the indicator light information. The illumination database contains the correspondence between the ambient light information, the indicator light information and the minimum display current. The illumination database is set manually and will not be described in detail here.

[0065] Step S206: When the detected current exceeds the minimum display current, output a preset abnormal information.

[0066] The abnormal information is set by the technician to remind the operator that the high-voltage quick-break fuse F1 in the detection device is blown. When the detection current exceeds the minimum display current, it means that the power supply VCC can output the current for the indicator light 4 to identify under the ambient light, and when the indication color does not appear in the image detection information, the abnormal information value is output to the terminal held by the operator.

[0067] Reference Figure 5 , the steps before obtaining pressure detection information also include: Step S300: Determine the specifications of the electromagnet according to the preset specifications of the detection device.

[0068] The specifications of the detection device are the parameter specifications of the detection device set by the technicians. The specifications of the electromagnet refer to the specifications of the electromagnet that can be installed on the detection device. The specifications of the electromagnet are matched by inputting the specifications of the detection device into the electromagnet database. The electromagnet database contains the correspondence between the specifications of the detection device and the specifications of the electromagnet. The electromagnet database is set manually and will not be described here. The specifications of the electromagnet include the dimensions of each component on the electromagnet, the magnetic flux lines of the electromagnet, the maximum temperature difference that can be tolerated, and the direction of the magnetic force on the magnetic flux lines.

[0069] Step S301: Control the preset assembly device to install the electromagnet according to the specifications, and obtain the coil winding image.

[0070] The assembly device refers to an automatic production line for assembling electromagnets, which controls the assembly device to install the iron core and coils corresponding to the specifications of the electromagnets. The coil winding image is an image of the iron core with the coil wound taken by a camera.

[0071] Step S302: Determine a reference coil image according to the electromagnet specifications.

[0072] The reference coil image refers to an image of a coil normally wound on an iron core, and is obtained by an operator calling up from the system an image taken when a coil is normally wound on an iron core of electromagnet specifications.

[0073] Step S303: performing inspection according to the coil winding image and the reference coil image by a preset inspection method, and installing the inspected electromagnet on the detection device.

[0074] The inspection method refers to a method for inspecting whether there is foreign matter between the coil and the iron core. Inspection and analysis are performed through the coil winding image, the reference coil image and the inspection method, and an electromagnet with no foreign matter between the coil and the iron core is installed on the detection device.

[0075] Reference Figure 6 , the preset inspection methods include: Step S400: determining a reference winding height according to a reference coil image.

[0076] The coil features are the shape and color features of the coil set by the technician. The reference winding height refers to the maximum height between each coil and the axis of the core when the coil is wound on the core. The reference winding height is obtained by identifying the preset coil features and the axis position of the core through the reference coil image. The method of image recognition of the reference winding height is common knowledge to those skilled in the art and will not be described in detail here.

[0077] Step S401: determining a winding height according to the coil winding image, and selecting a winding height exceeding a reference winding height as a marked winding height.

[0078] The winding height refers to the actual maximum height between each coil and the axis of the core when the coil is wound on the core. Refer to step S400 and obtain the winding height through the coil winding image. The marked winding height refers to the winding height exceeding the reference winding height, and the winding height exceeding the reference winding height is selected from the winding height as the marked winding height.

[0079] Step S402: Calculate the difference between the mark winding height and the reference winding height as the height deviation value.

[0080] The height deviation value refers to the deviation value between the marked winding height and the reference winding height. The height deviation value is calculated by calculating the difference between the marked winding height and the reference winding height.

[0081] Step S403: Determine the abnormal position according to the coil winding image and the marked winding height.

[0082] The abnormal position refers to the position where the coil marking the winding height appears, and the position of the coil marking the winding height is identified as the abnormal position from the coil winding image.

[0083] Step S404: Determine the cooling position according to the abnormal position.

[0084] The cooling positions refer to the positions of the coils on both sides of the abnormal position, and the positions of the coils on both sides of the abnormal position are used as the cooling positions.

[0085] Step S405: determining the cooling temperature and the heating temperature according to the height deviation value and the electromagnet specification, and repairing the electromagnet by a preset repair method according to the cooling temperature, the heating temperature, the abnormal position and the cooling position.

[0086] The repair method refers to the method used to remove foreign matter between the coil and the core and repair the coil. The cooling temperature refers to the temperature at which the cooling position needs to be cooled, and the heating temperature refers to the temperature at which the abnormal position needs to be heated. The cooling temperature and heating temperature are matched by inputting the height deviation value and the electromagnet specification into the preset electromagnet database, and the cooling temperature, heating temperature, abnormal position, cooling position and repair method are analyzed to repair the electromagnet.

[0087] The electromagnet database also includes the corresponding relationship between the height deviation value, electromagnet specifications, cooling temperature and heating temperature, which will not be elaborated here.

[0088] Reference Figure 7 , the method before repairing the electromagnet: Step S500: Calculate the difference between the cooling temperature and the heating temperature as a temperature deviation value.

[0089] The temperature deviation value refers to the deviation value between the cooling temperature and the heating temperature. The difference between the cooling temperature and the heating temperature is calculated as the temperature deviation value.

[0090] Step S501: Determine a reference deviation value according to the electromagnet specifications.

[0091] The reference deviation value refers to the maximum temperature deviation value that the electromagnet can withstand. The reference deviation value is retrieved from the electromagnet specifications.

[0092] Step S502: When the temperature deviation value exceeds the reference deviation value, a straight-line distance between the abnormal position and the preset coil winding position is calculated as a target distance.

[0093] The coil winding position is the end position of the coil wound on the iron core set by the technician, that is, the axial ends of the iron core. The target distance refers to the straight-line distance between the abnormal position and the coil winding position. When the temperature deviation value exceeds the reference deviation value, it means that the electromagnet cannot withstand the temperature difference between the cooling temperature and the heating temperature. The straight-line distance between the abnormal position and the coil winding position is calculated as the target distance.

[0094] Step S503: Select the shortest target distance from the target distances as the marked distance, and use the coil winding position corresponding to the marked distance as the marked winding position.

[0095] The marking distance refers to the shortest target distance, and the shortest target distance is selected from the target distances as the marking distance. The marking winding position refers to the coil winding position closest to the abnormal position, and the coil winding position of the marking distance is used as the marking winding position.

[0096] Step S504: split the electromagnet according to the marked winding positions and abnormal positions, and update the coil winding image.

[0097] The coil is split to the abnormal position by controlling the assembly device to mark the winding position, and the coil winding image is re-photographed.

[0098] Step S505: Determine the position of the foreign object according to the updated coil winding image and the preset foreign object features, control the blowing device to blow air at the position of the foreign object, and reinstall the electromagnet according to the electromagnet specifications.

[0099] The blowing device is an electric air pump. The foreign body features are the shape and color of the foreign body set by the technician. The foreign body position refers to the position of the foreign body between the coil and the iron core after the split. The position of the foreign body feature is identified from the updated coil winding image as the foreign body position, and the blowing device is controlled to blow air to the foreign body position. When the foreign body feature does not appear in the coil winding image, the electromagnet is reinstalled according to the electromagnet specifications.

[0100] Reference Figure 8 , the preset repair methods include: Step S600: Control a preset temperature control device to contact the coils at the cooling position and the abnormal position, and control the temperature control device at the cooling position to operate at the cooling temperature, and obtain a coil temperature image.

[0101] The temperature control device refers to a device for controlling the temperature output. The temperature control device includes a semiconductor refrigeration sheet and a probe. The direction of the current in the semiconductor refrigeration sheet is controlled to control the semiconductor refrigeration sheet to release or absorb heat through the probe. The probe of the temperature control device for absorbing heat is controlled to contact the cooling position, the probe of the temperature control device for releasing heat is controlled to contact the abnormal position, and the temperature control device for controlling the cooling position is operated at a cooling temperature.

[0102] The coil temperature image is an image captured by a camera of the temperature control device heating or cooling the coil.

[0103] Step S601: determining the gap distance according to the coil temperature image, cooling position and preset coil characteristics.

[0104] The gap distance refers to the distance between the coil at the cooling position and the coil at the abnormal position. The coil shape at the cooling position is identified by the coil features through the coil temperature image, and the coil shape at the abnormal position is identified. The minimum distance between the two shapes is calculated as the gap distance.

[0105] Step S602: determining a reference gap distance according to the cooling temperature.

[0106] The reference gap distance refers to the minimum distance at which the temperature of the coil at the cooling position affects the abnormal position when the abnormal position is heated. The reference gap distance is matched by inputting the cooling temperature into the preset gap database. The gap database contains the corresponding relationship between the cooling temperature and the reference gap distance. The gap database is set manually and will not be described here.

[0107] Step S603: When the gap distance is consistent with the reference gap distance, the temperature control device at the abnormal position is controlled to operate at a heating temperature.

[0108] When the gap distance is consistent with the reference gap distance, it means that the temperature of the coil at the cooling position has the smallest influence on the abnormal position, and the temperature control device at the abnormal position is controlled to operate at the heating temperature.

[0109] Step S604: After the temperature control device based on the abnormal position is running, the blowing power is determined according to the height deviation value, and the preset blowing device is controlled to blow the abnormal position with the blowing power.

[0110] Blowing power refers to the power used to blow foreign objects. The height deviation value is input into a preset blowing database to match the blowing power, and the blowing device is controlled to blow the abnormal position with the blowing power.

[0111] The blowing database contains the corresponding relationship between the height deviation value and the blowing power. The blowing database is set manually and will not be described in detail here.

[0112] Step S605: When no foreign body feature appears based on the coil temperature image, the knocking force is determined according to the heating temperature and the height deviation value, and a preset knocking device is controlled to knock the abnormal position with the knocking force.

[0113] The knocking device includes a knocking head, a power mechanism and a control unit. The knocking force refers to the force used to knock the coil at the abnormal position. When no foreign body characteristics appear in the coil temperature image, it means that the foreign body has been removed, and the knocking device is controlled to knock the abnormal position with the knocking force.

[0114] Reference Fig. 9 , the preset inspection methods also include: Step S700: When the reference coil image does not show a height deviation value, a preset reference current is output to the electromagnet to obtain a magnetic strength value.

[0115] The reference current is the current output by the power supply VCC set by the technician. The magnetic strength value refers to the strength value of the magnetic force generated by the electromagnet. When the reference coil image does not show a height deviation value, it means that there is a foreign object in the gap between each coil. Then the reference current is output to the electromagnet, and the parameters at both ends of the iron core are detected by the preset magnetic sensor as the magnetic strength value.

[0116] Step S701: When the magnetic strength value is inconsistent with the preset reference magnetic strength value, the position of the foreign object is determined by a preset magnetic detection method.

[0117] The reference magnetic strength value is the magnetic strength value generated by the electromagnet when the reference current flows through the coil and the core without foreign matter set by the technician. The magnetic detection method is a method of analyzing the magnetic force to know the location of foreign matter or particles.

[0118] The position of the foreign matter refers to the position of the particles in the gap of the coil. When the magnetic strength value is inconsistent with the reference magnetic strength value, it means that there is a foreign matter in the gap between the coils. The magnetic detection method is used to determine the position of the foreign matter.

[0119] Step S702: Determine the marked cooling temperature and the marked blowing power according to the electromagnet specifications, and control the temperature control device to operate according to the marked cooling temperature and the foreign matter position.

[0120] The marked cooling temperature refers to the temperature at which the coil at the foreign body position needs to be cooled, and the marked blowing power refers to the power used to blow air to the particles in the gap of the coil. The size of the coil is retrieved through the electromagnet specifications, and the maximum distance of the gap between the coils when the coil is wound on the iron core is calculated based on the size of the coil. The maximum distance is input into the temperature database to match the marked cooling temperature, and the maximum distance is input into the blowing database to match the marked blowing power.

[0121] The temperature database also includes the corresponding relationship between the maximum distance and the marked cooling temperature, and the blowing database also includes the corresponding relationship between the maximum distance and the marked blowing power, which will not be described in detail here.

[0122] Step S703: After the temperature control device is running, a detection image is obtained according to the position of the foreign matter.

[0123] When the temperature control device is operated at the marked blowing power, the detection image refers to the image of the foreign object position, and the image of the foreign object position is taken by the camera as the detection image.

[0124] Step S704: Determine the marked foreign object position according to the detected image and the preset foreign object features, and control the blowing device to blow air at the marked blowing power and the marked foreign object position.

[0125] Marking the position of foreign matter refers to the actual position of the foreign matter between the coils after the coils on both sides of the foreign matter position are cooled. The position of the foreign matter feature is identified by detecting the image as the marked foreign matter position, and the blowing device is controlled to blow air at the marked blowing power and the marked foreign matter position.

[0126] The preset magnetic detection methods include: Step S800: Determine the detection path and reference magnetic force direction according to the electromagnet specifications, and control the preset magnetic field detection device to run along the detection path.

[0127] The magnetic field detection device refers to a device for detecting the direction of magnetic force, and the magnetic field detection device can be a magnetometer. The detection path refers to the magnetic flux lines of the electromagnet specifications, and the reference magnetic force direction refers to the magnetic force direction of the electromagnet on the detection path without foreign matter. The detection path and the reference magnetic force direction are retrieved from the electromagnet specifications.

[0128] Step S801: Acquire the marking direction on the magnetic field detection device.

[0129] The marking direction refers to the direction of the magnetic force displayed when the magnetic field detection device moves on the detection path, and the direction of the magnetic force is retrieved from the magnetic field detection device when it moves on the detection path as the marking direction.

[0130] Step S802: When the marking direction is inconsistent with the reference magnetic direction, the marking direction inconsistent with the reference magnetic direction is used as the detection direction.

[0131] The detection direction refers to the marking direction that is inconsistent with the reference magnetic direction. When the marking direction is inconsistent with the reference magnetic direction, it means that there is a foreign object in the gap between the coils. The marking direction that is inconsistent with the reference magnetic direction is used as the detection direction.

[0132] Step S803: Determine the location of the foreign object according to the detection direction.

[0133] The foreign object position refers to the position where the foreign object exists in the gap inside the coil. A straight line is extended in the detection direction, and the convergence point of the extended straight line is taken as the foreign object position.

[0134] Based on the same inventive concept, an embodiment of the present invention provides a load detection system based on a high voltage converter, comprising: An acquisition module, used to acquire image detection information, indication image information, pressure detection information, ambient light information, coil winding image, coil temperature image, magnetic strength value, detection image and marking direction; A memory, used for storing a load detection method based on a high voltage converter; The processor is used to load, execute and implement the program stored in the memory.

[0135] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. The specific working process of the system, device and unit described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0136] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A load detection method based on a high voltage converter, characterized in that: include: Obtain image detection information of high voltage converter; Determine the access position based on the image detection information and the preset needle features; When the access position coincides with the preset port position, obtaining indication image information; When a preset indication color appears in the indication image information, continue to update the indication image information until the indication color does not appear in the indication image information; When the preset indication color does not appear in the indication image information, the preset warning information is output through the preset verification method.

2. A load detection method based on a high voltage converter according to claim 1, characterized in that: The preset authentication methods include: When the preset indication color does not appear in the indication image information, output the preset guidance information and obtain the pressure detection information and the ambient light information of the preset detection device; When the pressure detection information is not 0, the image detection information is updated; Determine the detection angle according to the updated image detection information and the preset support rod features, and update the pressure detection information; When the updated pressure detection information is 0, the marking angle is determined according to the updated pressure detection information and the detection angle; Determine the detection current according to the marking angle; Determine the minimum display current according to the ambient light information and the preset indication light information; When the detected current exceeds the minimum display current, the preset abnormal information is output.

3. A load detection method based on a high voltage converter according to claim 2, characterized in that: The steps before obtaining pressure detection information also include: Determine the electromagnet specifications according to the preset detection device specifications; Control the preset assembly device to install the electromagnet according to the specifications and obtain the coil winding image; Determine the reference coil image based on the electromagnet specifications; The coil winding image and the reference coil image are inspected by a preset inspection method, and the electromagnet after inspection is installed on the detection device.

4. A load detection method based on a high voltage converter according to claim 3, characterized in that: The preset inspection methods include: Determine a reference winding height according to a reference coil image; Determine the winding height according to the coil winding image, and select the winding height exceeding the reference winding height as the marked winding height; Calculate the difference between the marked winding height and the reference winding height as the height deviation value; Determine the abnormal position based on the coil winding image and the marked winding height; Determine the cooling position based on the abnormal position; The cooling temperature and the heating temperature are determined according to the height deviation value and the electromagnet specifications, and the electromagnet is repaired through a preset repair method according to the cooling temperature, the heating temperature, the abnormal position and the cooling position.

5. A load detection method based on a high voltage converter according to claim 4, characterized in that: Method before repairing the electromagnet: Calculate the difference between the cooling temperature and the heating temperature as the temperature deviation value; Determine the reference deviation value according to the electromagnet specifications; When the temperature deviation value exceeds the reference deviation value, the straight-line distance between the abnormal position and the preset coil winding position is calculated as the target distance; The shortest target distance is selected from the target distances as the marking distance, and the coil winding position corresponding to the marking distance is used as the marking winding position; The electromagnet is separated according to the marked winding position and abnormal position, and the coil winding image is updated; The position of the foreign object is determined according to the updated coil winding image and the preset foreign object features, and the blowing device is controlled to blow air at the position of the foreign object, and the electromagnet is reinstalled according to the electromagnet specifications.

6. A load detection method based on a high voltage converter according to claim 4, characterized in that: The preset repair methods include: Controlling a preset temperature control device to contact the coils at the cooling position and the abnormal position, and controlling the temperature control device at the cooling position to operate at the cooling temperature, and acquiring a coil temperature image; Determine the gap distance based on the coil temperature image, cooling position and preset coil characteristics; Determine the reference gap distance based on the cooling temperature; When the gap distance is consistent with the reference gap distance, the temperature control device at the abnormal position is controlled to operate at the heating temperature; After the temperature control device based on the abnormal position is running, the blowing power is determined according to the height deviation value, and the preset blowing device is controlled to blow the abnormal position with the blowing power; When no foreign body features appear based on the coil temperature image, the knocking force is determined according to the heating temperature and the height deviation value, and the preset knocking device is controlled to knock on the abnormal position with the knocking force.

7. A load detection method based on a high voltage converter according to claim 3, characterized in that: The preset inspection methods also include: When no height deviation value appears in the reference coil image, a preset reference current is output to the electromagnet to obtain a magnetic force intensity value; When the magnetic strength value is inconsistent with the preset reference magnetic strength value, the position of the foreign body is determined by a preset magnetic detection method; Determine the marked cooling temperature and the marked blowing power according to the electromagnet specifications, and control the temperature control device to operate according to the marked cooling temperature and the foreign body position; After the temperature control device is running, the detection image is obtained according to the position of the foreign matter; The position of the marked foreign object is determined according to the detected image and the preset foreign object features, and the blowing device is controlled to blow air at the marked blowing power and the marked foreign object position.

8. A load detection method based on a high voltage converter according to claim 7, characterized in that: The preset magnetic detection methods include: Determine the detection path and reference magnetic force direction according to the electromagnet specifications, and control the preset magnetic field detection device to run along the detection path; Obtaining the direction of the mark on the magnetic field detection device; When the marking direction is inconsistent with the reference magnetic direction, the marking direction inconsistent with the reference magnetic direction is used as the detection direction; Determine the location of foreign matter based on the detection direction.

9. A load detection system based on a high voltage converter, characterized in that: include: An acquisition module, used to acquire image detection information, indication image information, pressure detection information, ambient light information, coil winding image, coil temperature image, magnetic strength value, detection image and marking direction; A memory, used to store a load detection method based on a high voltage converter according to any one of claims 1 to 8; The processor is used to load, execute and implement the program stored in the memory.

10. A load detection device based on a high voltage converter, using a load detection method based on a high voltage converter as claimed in any one of claims 1 to 8, characterized in that: It comprises a body (1), an indicator light (4) arranged on the body (1), a coaxial axis (2) arranged at an end of the body (1) away from the indicator light (4), a support rod (3) arranged on the coaxial axis (2), and a metal test needle (5) arranged on the support rod (3); The support rod (3) is provided with a spring (8), and one end of the support rod (3) away from the concentric axis (2) is provided with a magnetic attraction device (7) for fixing the metal test needle (5), and the metal test needle (5) and the support rod (3) are provided with a cable (6) for conducting current between the metal test needle (5) and the indicator light (4).

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