CN115127484A - Device and method for detecting flatness of closing resistor disc - Google Patents
Device and method for detecting flatness of closing resistor disc Download PDFInfo
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- CN115127484A CN115127484A CN202210547760.9A CN202210547760A CN115127484A CN 115127484 A CN115127484 A CN 115127484A CN 202210547760 A CN202210547760 A CN 202210547760A CN 115127484 A CN115127484 A CN 115127484A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/30—Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
- G01S17/08—Systems determining position data of a target for measuring distance only
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/481—Constructional features, e.g. arrangements of optical elements
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Abstract
The invention discloses a detection device and a detection method for flatness of a closing resistor disc, which relate to the field of laser scanning measurement and comprise that a detection platform is provided with a groove, a conveying platform is arranged in the groove, the conveying platform is provided with the closing resistor disc, and flexible baffles with the same structure are respectively arranged at two ends of the conveying platform along a conveying track of the closing resistor disc; the side surface of the detection platform is provided with a lifting support module, the upper end of the lifting support module is connected with a support plate, the lower end surface of the support plate is provided with a laser integration module, and the integration module is positioned right above the conveying platform. The flatness detection method reduces the difficulty of flatness measurement, forms the profile of the closing resistance card through laser scanning, automatically records the flatness of the surface of the closing resistance card, automatically forms a flatness detection report of the closing resistance card, and greatly improves the detection efficiency and accuracy.
Description
Technical Field
The invention relates to the field of laser scanning measurement, in particular to a device and a method for detecting flatness of a closing resistor disc.
Background
The high-voltage circuit breaker is also called as a high-voltage switch, has enough breaking capacity and arc extinguishing capacity, can cut off no-load current and load current of a closed high-voltage circuit, and can be matched with a protection device and an automatic device when a system breaks down to rapidly cut off fault current so as to reduce the power failure range and prevent the accident from expanding, thereby having extremely important significance for ensuring the safe operation of a power system. When the transmission line is long, the circuit breaker is required to be provided with a closing resistor in order to effectively reduce closing overvoltage during closing of the no-load long line and automatic reclosing. The main components of the closing resistance sheet are clay, alumina and carbon, the three components are mixed and formed, and a wafer ceramic body is obtained by adopting a powder metallurgy process for sintering. The ceramic resistance card can work in air, oil and SF6 gas, has large heat capacity, can bear short-time overload and high peak current, can consume large energy by using a small volume, and is widely applied to high-voltage circuit breakers and GIS products. However, due to the manufacturing process, the surface of the switching-on resistor disc is uneven, the switching-on resistor disc is cracked and chipped after the switching-on resistor disc is installed due to the uneven surface, and the like, and particles move to a proper position in the operation of the circuit breaker, such as a shell opposite to a static end shield cover, so that the internal partial discharge and even insulation breakdown of the circuit breaker are caused, equipment tripping is caused, and huge hidden danger and economic loss are brought to the intrinsic safety of a power grid.
At present, a closing resistor disc in a tank type circuit breaker in the power industry leaves a factory and is not subjected to surface flatness detection, and a detection device is not provided. Generally, a glass cover with good flatness is covered on a closing resistance sheet on a horizontal desktop with good flatness on which the closing resistance sheet is placed, and then the flatness of the closing resistance sheet is measured through a feeler gauge. In the measuring process, because the detection flow is complicated, detection personnel usually spend a large amount of time and energy to measure, and for the record of the detection result, the measurement personnel usually need to mark and draw pictures, the result record is complicated, and because of the inconsistent horizontal ability of the detection personnel, the inaccuracy of the detection result can be caused, and the reliability of the issued detection report is low. Meanwhile, in the measuring process, because the feeler has high hardness, the closing resistor disc is fragile and has low strength, the edge of the closing resistor disc is easily damaged in the detection process, and a coating layer with high electrical resistance and SF6 decomposer resistance is sprayed on the surface of the closing resistor disc to rub off, so that the function of the closing resistor disc is lost, the closing resistor disc which is often detected cannot be assembled and used, and the resources are greatly wasted. Meanwhile, the detection of the switching-on resistance pieces is sampling inspection, the good conditions of the switching-on resistance pieces in batches can be judged only according to the result of sampling inspection proportion, and the flatness of each resistance piece cannot be accurately measured. Therefore, the flatness of the switching-on resistance disc assembled in the tank type circuit breaker can not be ensured, and the tank type circuit breaker has potential safety hazards.
Chinese patent CN213515454U discloses a surface smoothness detection device is used in zinc oxide resistance card production, including the base, the top of base is equipped with the guide bar, and the guide bar is the hexagon structure, is equipped with on the guide bar and puts the thing board, puts and is equipped with four on the thing board and puts the thing groove, and the side department of base is equipped with the backup pad, is equipped with the baffle in the middle of the backup pad, and the centre through connection of baffle has the carriage release lever, and the below of carriage release lever articulates there is the cylinder, this practicality is used through the cooperation of lever and pointer, and the pairing rotation angle is carried out twice and is enlargied, conveniently observes. However, the conveying of the detection object is inconvenient, the structure of the device is complex, and the use cost is high.
Chinese patent CN214747826U discloses a shell roughness detection device for electromechanical product relates to shell detection technical field, to current problem, proposes following scheme now including mount, mechanism and fixture of making level, the welding of mount top outer wall one end has the L template, and L template top outer wall one end installs servo motor, the servo motor output shaft has cup jointed the capstan winch, and L template one side outer wall installs the fixed pulley, the winding has the hawser on the capstan winch, and hawser and fixed pulley form sliding fit. The utility model discloses can be on finding the shell the roughness be horizontally a position, measure and the interval between this horizontal position through laser range finder to for reference standard in the input to integral type computer, measure the interval between its and the shell different positions through laser range finder, when numerical value and reference standard are inconsistent, then show this position unevenness on the shell, be convenient for find the position of unevenness on the shell. However, the shape of the closing resistor disc is greatly different from that of the product shell, and the like, so that the method is not suitable for detecting the flatness of the closing resistor disc.
Therefore, a method and a device for detecting the surface flatness of the closing resistor disc are needed to solve the above technical problems.
Disclosure of Invention
The invention provides a device and a method for detecting the flatness of a closing resistance card, and aims to solve the technical problems that the flatness of the closing resistance card is measured in the power industry at present, and the measurement process is complicated and the measurement result is inaccurate due to manual measurement and recording.
In order to realize the purpose of the invention, the technical scheme adopted by the invention is as follows:
a detection device for flatness of a closing resistor disc comprises a detection platform, a conveying platform, a closing resistor disc, a lifting support module, a support plate and a laser integration module;
the detection platform is provided with a groove, a conveying platform is arranged in the groove, a switching-on resistance card is placed on the conveying platform, and flexible baffles with the same structure are respectively arranged at two ends of the conveying platform along a conveying track of the switching-on resistance card;
the side surface of the detection platform is provided with a lifting support module, the upper end of the lifting support module is connected with a support plate, the lower end surface of the support plate is provided with a laser integration module, and the integration module is positioned right above the conveying platform.
Furthermore, the lifting support module plays a role in supporting and lifting, and scales are arranged on the lifting support module to represent the distance from the laser integrated module to the conveying platform.
Furthermore, the lifting support module adopts electro-hydraulic lifting, the working principle is that a cylinder piston moves downwards, hydraulic oil enters the upper end of the hydraulic cylinder through the anti-explosion electromagnetic directional valve, oil in the oil return tank returns to the oil tank through the balance valve, the hydraulic control one-way valve, the throttle valve and the anti-explosion electromagnetic directional valve, and in order to enable the weight to stably descend, the brake is safe and reliable, the balance valve is arranged on the oil return channel, the balance loop keeps pressure, the weight does not change the descending speed, the flow is adjusted through the throttle valve, and the lifting speed is controlled.
Further, the conveying platform comprises a carrier roller and a middle framework, the carrier roller is arranged in the middle framework, and the conveying platform is further connected with a driving mechanism. The conveying platform adopts a conveying mode of a conveying belt, the working principle of the conveying platform is that a middle framework and a carrier roller form the conveying belt to serve as a traction and bearing member, and a driving mechanism tensions the conveying belt so as to continuously convey the bulk materials or finished products.
Further, detection device still includes the pillar, and the pillar is installed in testing platform's below, and testing platform plays the supporting role, and its intensity is high, and hardness is big, and surfacing.
Furthermore, four support columns are arranged and are respectively arranged at the positions of four corners of the lower end surface of the detection platform; the support column mainly plays a role of supporting the detection platform.
Furthermore, an acousto-optic alarm module can be arranged in the detection platform, and the acousto-optic alarm module utilizes an audio effect chip to amplify through a triode and a transformer to push a loudspeaker to make sound; and a timing circuit is adopted to control the ultra-bright light-emitting diode to emit a flashing light signal.
Furthermore, the carrier plate horizontally extends to the upper part of the conveying platform, is vertical to the lifting support module and forms an inverted L-shaped structure.
Further, the surface of the detection platform is flat.
Further, the laser integrated module is composed of a laser emission probe and a laser receiving probe, the laser emission probe and the laser receiving probe are uniformly arranged, specifically, one laser emission probe is parallel to one laser receiving probe, or the laser emission probe and the laser receiving probe are arranged into a whole in a crossed mode, so that the laser integrated module can emit laser with certain frequency and wavelength in order to emit and receive feedback signals in time.
Further, the carrier plate serves as a rotatable carrier for the laser integrated module.
Furthermore, two flexible baffles are arranged, so that the closing resistor disc can move in the detection area of the detection platform all the time.
Further, when the flatness of the closing resistor disc does not meet the standard requirement, the detection device can prompt detection personnel through the sound-light alarm module.
A method for detecting flatness of a closing resistor disc comprises the following steps:
step S1: the laser integration module emits laser, and part of the laser touches an object and returns to the laser integration module;
step S2: the laser integration module receives the returned laser signal and records time;
step S3: after the time signal is received, converting the time signal into a graphic signal according to the proportion of the time length through a signal processing module, and displaying the graphic signal on display equipment in real time;
step S4: inputting the distance between the laser integration module and the transmission platform on a computer display screen, calculating the distance from the laser integration module to the surface of the switching-on resistance card according to the received time signal, reflecting the flatness of the detected surface of the switching-on resistance card according to the size of each distance, and representing the flatness on computer equipment;
step S5: inputting the set flatness data to computer equipment in advance, comparing the input data with the flatness represented in the step S4 and automatically judging by the computer equipment, if the flatness of the surface of the closing resistor disc exceeds the standard range, giving an alarm by a system, and simultaneously increasing the frequency of laser by a laser integration module and marking on the closing resistor disc;
step S6: after detection is finished, the computer equipment can generate a detection report according to a detection result, and meanwhile, the flatness qualification rate is counted according to the detected number of the closing resistance pieces.
Further, the signal fed back by the laser integration module is recorded by the computer.
Further, the recording time in step S2 refers to the start time of emitting laser light and the return time of receiving laser light.
Further, the signal processing module is arranged in the computer.
Further, the time signal is converted into a graphic signal in step S3, and specifically, the time signal is embodied on a computer or an oscilloscope in the form of an analog signal with a continuous characteristic or a digital signal with a discrete characteristic.
Further, in step S5, when the flatness range is out of the preset flatness range, the computer receives the feedback signal and transmits the received signal to the laser integration module, the laser integration module adjusts the laser emission energy according to the received signal, and uses the laser beam to mark an unqualified permanent mark on the surface of the closing resistor disc, and part of the material on the surface is burned off through the light energy.
Further, the flatness data set in step S5 is: the flatness of two end planes of the resistance card is not more than 0.2mm, and the parallelism between the two end planes is not more than 0.5 mm.
Further, the energy of the laser emission is adjusted by adjusting the emission frequency or the emission wavelength.
Further, the flatness of the closing resistor disc of the tank-type circuit breaker is detected, the possibility that the closing resistor disc is cracked or broken in the assembling and running processes due to the flatness problem is reduced, the safety of equipment is improved, the potential safety hazard of the equipment is reduced, and the stability and the reliability of power grid equipment are improved.
Furthermore, the difficulty of flatness measurement is reduced, the profile of the switching-on resistor disc is formed through laser scanning and automatic scanning, the flatness of the surface of the switching-on resistor disc is automatically recorded, a switching-on resistor disc flatness detection report is automatically formed, the detection efficiency and accuracy are greatly improved, the labor cost is greatly reduced, the time spent in installation, fixation and measurement is avoided, the measurement time is effectively shortened, and the measurement speed is greatly improved.
Furthermore, through nondestructive testing of laser scanning, the switching-on resistance card has no mechanical damage in the testing process, and after testing, the switching-on resistance card with the flatness meeting the standard can be continuously put into use, so that the secondary utilization of the switching-on resistance card is not influenced, the resource waste is avoided, and the cost is saved.
Furthermore, through automatic scanning, measurement and recording of the device, the accuracy and the speed of flatness measurement are improved, and the condition that measurement results are different due to personal professional quality differences is avoided.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the profile of the switching-on resistance card is formed through laser scanning and automatic scanning, the flatness of the surface of the switching-on resistance card is automatically recorded, and a switching-on resistance card flatness detection report is automatically formed, so that the detection efficiency and accuracy are greatly improved;
the laser scanning nondestructive testing is adopted, so that the closing resistor disc is free of any mechanical damage in the testing process, after the testing, the closing resistor disc with the flatness meeting the standard can be continuously put into use, the secondary utilization of the closing resistor disc is not influenced, the problems of edge damage and surface coating damage of the closing resistor disc caused by manual flatness measurement are solved, the cost is reduced, and the problems of different judgment of the flatness measuring results of the closing resistor disc due to different levels of measuring personnel and errors caused by manual recording are solved.
Drawings
FIG. 1 is an overall structure diagram of a detection device for flatness of a closing resistor disc of the present invention;
FIG. 2 is a top view of the detecting device for flatness of the closing resistor disc of the present invention;
FIG. 3 is a side view of the detecting device for flatness of the closing resistor disc of the present invention;
FIG. 4 is a flow chart of a method for detecting the flatness of a closing resistor disc according to the present invention;
reference numerals: 1. a lifting support module; 2. a detection platform; 3. a pillar; 4. a transfer platform; 5. switching on a resistor disc; 6. a flexible baffle; 7. a laser integration module; 8. and a carrier plate.
Detailed Description
In order to make the purpose and technical solution of the present invention clearer, the following will clearly and completely describe the technical solution of the present invention with reference to the embodiments.
It is to be understood that the terms "center," "upper," "lower," "horizontal," "left," "right," "front," "rear," "lateral," "longitudinal," and the like are used in the illustrated orientation or positional relationship as shown in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting.
Example 1
The device for detecting the flatness of the closing resistor disc 5 shown in fig. 1-3 comprises a detection platform 2, a conveying platform 4, a closing resistor disc 5, a lifting support module 1, a carrier plate 8, a laser integration module 7 and a support column 3; the detection platform 2 is provided with a groove, a conveying platform 4 is installed in the groove, the conveying platform 4 is provided with a switching-on resistance card 5, two ends of the conveying platform 4 are respectively provided with flexible baffles 6 with the same structure along the conveying track of the switching-on resistance card 5, and the two flexible baffles 6 can enable the switching-on resistance card 5 to move in the detection area of the detection platform 2 all the time; the side surface of the detection platform 2 is provided with a lifting support module 1, the lifting support module 1 plays a role in supporting and lifting, and the lifting support module 1 is provided with scales to indicate the distance from the laser integration module 7 to the transmission platform 4. The lifting support module 1 adopts electro-hydraulic lifting, the working principle is that a cylinder piston moves downwards, hydraulic oil enters the upper end of a hydraulic cylinder through an anti-explosion electromagnetic directional valve, oil in an oil return tank returns to an oil tank through a balance valve, a hydraulic control one-way valve, a throttle valve and an anti-explosion electromagnetic directional valve, and in order to enable the weight to stably descend, a brake is safe and reliable. The upper end of the lifting support module 1 is connected with a support plate 8, the lower end face of the support plate 8 is provided with a laser integration module 7, the laser integration module 7 is positioned right above the conveying platform 4, the support plate 8 is used as a rotatable carrier of the laser integration module 7, the support plate 8 horizontally extends to the upper part of the conveying platform 4, and the support plate 8 is vertical to the lifting support module 1 and forms an inverted L-shaped structure. Conveying platform 4 includes bearing roller and middle part framework, and the bearing roller is located in the middle part framework, and conveying platform 4 still is connected with actuating mechanism. The conveying platform 4 adopts a conveying mode of a conveying belt, the working principle of the conveying platform is that a middle framework and a carrier roller form the conveying belt to serve as a traction and bearing component, and the conveying belt is tensioned by a driving mechanism so as to continuously convey bulk materials or finished products. The laser integration module 7 is composed of a laser emission probe and a laser receiving probe, the laser emission probe and the laser receiving probe are uniformly arranged, specifically, one laser emission probe is parallel to one laser receiving probe, or the laser emission probe and the laser receiving probe are arranged into a whole in a crossed mode, so that the laser integration module 7 can emit laser with certain frequency and wavelength in order to emit and receive feedback signals in time. The support 3 is arranged below the detection platform 2, and the detection platform 2 plays a supporting role, and has high strength, high hardness and smooth surface; four supporting columns 3 are arranged and are respectively arranged at the four corners of the lower end surface of the detection platform 2; the support column 3 mainly functions to support the inspection platform 2. The surface of the detection platform 2 is flat, and the reciprocating uniform motion can be realized through the control of a computer. The detection platform 2 can also be internally provided with an acousto-optic alarm module which utilizes an acoustic effect chip to amplify through a triode and a transformer to push a loudspeaker to make sound; a timing circuit is adopted to control the ultra-bright light emitting diode to emit a flashing light signal, and if the flatness of the closing resistor disc 5 does not meet the standard requirement, the detection device can prompt detection personnel through the sound-light alarm module.
As shown in fig. 4, a flowchart of a method for detecting flatness of a closing resistor sheet 5 includes the following steps:
step S1: the laser integration module 7 emits laser, and part of the laser touches an object and returns to the laser integration module 7;
step S2: the laser integration module 7 receives the returned laser signal and records the time; specifically, the computer records the signal fed back by the laser integration module 7, and the recording time refers to the starting time of emitting laser and the returning time of receiving laser.
Step S3: after the time signal is received, converting the time signal into a graphic signal according to the proportion of the time length through a signal processing module, and displaying the graphic signal on display equipment in real time;
in the step, the time signal is converted into a graphic signal, and specifically, the time signal is embodied on a computer or an oscilloscope in the form of an analog signal with continuous characteristics or a digital signal with discrete characteristics.
Step S4: inputting the distance between the laser integration module 7 and the transmission platform 4 on a computer display screen, calculating the distance from the laser integration module 7 to the surface of the closing resistor disc 5 according to the received time signal, reflecting the flatness of the detected surface of the closing resistor disc 5 according to the size of each distance, and representing the flatness on computer equipment;
step S5: inputting the set flatness data into computer equipment in advance, comparing the input data with the flatness represented in the step S4 and automatically judging by the computer equipment, if the flatness of the surface of the closing resistor disc 5 exceeds the standard range, giving an alarm by a system, and simultaneously increasing the frequency of laser by the laser integration module 7 and marking the closing resistor disc 5; specifically, according to the standard requirement and the requirement of flatness of the closing resistor disc 5, the related data may include the specification and model of the closing resistor disc 5, the manufacturer, the date of leaving the factory, and the like. And what the laser integrated module 7 needs to detect is the surface that the closing resistor disc 5 can see, not all sides. When the flatness exceeds the preset flatness range in the step, the computer receives a feedback signal and transmits the received signal to the laser integration module 7, the laser integration module 7 adjusts the laser emission energy according to the received signal, the laser emission energy can be adjusted by adjusting the emission frequency or the emission wavelength, unqualified permanent marks are marked on the surface of the closing resistor disc 5 by using laser beams, and partial substances on the surface are burnt out through light energy. And the flatness data range set in step S5 is: the flatness of two end planes of the resistance card is not more than 0.2mm, and the parallelism between the two end planes is not more than 0.5 mm.
Step S6: after the detection is finished, the computer equipment can generate a detection report according to the detection result, and meanwhile, the flatness qualification rate is counted according to the number of the detected closing resistance cards 5.
The flatness of the closing resistance card 5 of the tank-type circuit breaker is detected, the possibility that the closing resistance card 5 cracks or is broken in the assembling and running processes due to the flatness problem is reduced, the safety of equipment is improved, the potential safety hazard of the equipment is reduced, and the stability and the reliability of power grid equipment are improved. In order to reduce the difficulty of flatness measurement, the profile of the closing resistor disc 5 is formed through laser automatic scanning, the flatness of the surface of the closing resistor disc 5 is automatically recorded, specifically, through laser scanning, a time signal can be formed according to the time difference between the emission and the reception of a laser emission probe and a laser receiving probe, and the profile of the resistor disc is represented on a computer in the form of an analog signal or a digital signal, so that the profile of the surface of the resistor disc is automatically recorded. The specific flatness evaluation rule can be set according to actual standard requirements, and meanwhile, a flatness detection report of the closing resistor disc 5 is automatically formed, so that the detection efficiency and accuracy are greatly improved, the labor cost is greatly reduced, the time spent in installation, fixation and measurement is avoided, the measurement time is effectively shortened, and the measurement speed is greatly improved. And through nondestructive testing of laser scanning, the closing resistance card 5 has no mechanical damage in the detection process, and after detection, the closing resistance card 5 with the flatness meeting the standard can be continuously put into use, so that the secondary utilization of the closing resistance card 5 is not influenced, the resource waste is avoided, and the cost is saved. Through the automatic scanning, measurement and recording of the device, the accuracy and the speed of flatness measurement are improved, and the condition that the measurement results are different due to personal professional quality differences is avoided.
Specifically, the operation process of the detection device is as follows: firstly, a closing resistor disc 5 is placed on a conveying platform 4, the conveying platform 4 can horizontally reciprocate and move at a constant speed, a plurality of laser emission probes and laser receiving probes in a laser integration module 7 always emit and receive laser, and the received time signal is represented in a computer in the form of an analog signal or a digital signal, so that when the closing resistor disc 5 passes through the laser emission probe, because the distance changes, the time signal changes, and the change of the time signal can represent the three-dimensional appearance and the surface flatness of the closing resistance card 5, if the appearance and the surface evenness of the closing resistance card 5 cannot be acquired due to the excessively high conveying speed of the conveying platform 4, the driving mechanism can be controlled, and then adjust the speed and the direction of conveying platform 4 for the signal accuracy, even of gathering, for example the power of the mechanism of increase drive can increase the conveying speed of transmission platform.
The principle of the detection method is as follows: the laser emitting probes emit laser with the same frequency and the same wavelength, the laser is reflected by the closing resistance card 5 and then received by the laser receiving probes, and the round trip time of the laser is recorded. Since the wavelength and the frequency of the laser are the same, the propagation speed of the laser in the air is the same. Therefore, the distance of the path traveled by the light can be judged according to the time length received by the laser, and the three-dimensional appearance and the surface flatness of the closing resistor disc 5 are represented. With the formula c ═ λ f, where c is the speed of light; λ is the wavelength; f is the frequency.
If the time required for light traveling at speed c in air to travel back and forth once between points A, B is t, then the travel time between points A, B can be expressed as: t is 2D/c
Wherein: d is A, B distance between two points; c is the speed; t is the time required for the light to make one round trip A, B.
The above are merely embodiments of the present invention, which are described in detail and with particularity, and therefore should not be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the spirit of the present invention, and these changes and modifications are within the scope of the present invention.
Claims (10)
1. The device for detecting the flatness of the closing resistor disc is characterized by comprising a detection platform, a conveying platform, the closing resistor disc, a lifting support module, a support plate and a laser integration module;
the detection platform is provided with a groove, a conveying platform is arranged in the groove, a switching-on resistance card is placed on the conveying platform, and flexible baffles with the same structure are respectively arranged at two ends of the conveying platform along a conveying track of the switching-on resistance card; the side surface of the detection platform is provided with a lifting support module, the upper end of the lifting support module is connected with a support plate, the lower end surface of the support plate is provided with a laser integration module, and the integration module is positioned right above the conveying platform.
2. The closing resistor disc flatness detection device according to claim 1, further comprising a support pillar, wherein the support pillar is installed below the detection platform.
3. The device for detecting the flatness of the closing resistor disc as claimed in claim 1, wherein the lifting support module is an electro-hydraulic lifting device.
4. The device for detecting the flatness of the closing resistor disc as claimed in claim 1, wherein the carrier plate extends horizontally above the conveying platform, is perpendicular to the lifting support module, and forms an inverted L-shaped structure.
5. The device for detecting the flatness of the closing resistor disc as claimed in claim 1, wherein the conveying platform comprises a carrier roller and a middle framework, the carrier roller is arranged in the middle framework, and the conveying platform is further connected with a driving mechanism.
6. The device for detecting the flatness of the closing resistor disc according to claim 1, wherein the laser integration module is composed of a laser emission probe and a laser receiving probe, and the laser emission probe and the laser receiving probe are uniformly arranged.
7. The device for detecting the flatness of the closing resistor disc as claimed in claim 1, wherein the lifting support module is provided with a scale for indicating the distance from the laser integration module to the conveying platform.
8. A method for detecting flatness of a closing resistor disc is used for a device for detecting flatness of the closing resistor disc according to any one of claims 1 to 7, and is characterized by comprising the following steps:
step S1: the laser integration module emits laser, and part of the laser touches an object and returns to the laser integration module;
step S2: the laser integration module receives the returned laser signal and records time;
step S3: after the time signal is received, converting the time signal into a graphic signal according to the proportion of the time length through a signal processing module, and displaying the graphic signal on display equipment in real time;
step S4: inputting the distance between the laser integration module and the transmission platform on a computer display screen, calculating the distance from the laser integration module to the surface of the switching-on resistance card according to the received time signal, reflecting the flatness of the detected surface of the switching-on resistance card according to the size of each distance, and representing the flatness on computer equipment;
step S5: inputting the set flatness data to computer equipment in advance, comparing the input flatness data with the flatness represented in the step S4 and automatically judging by the computer equipment, if the flatness of the surface of the closing resistor disc exceeds the set flatness data, sending an alarm by a system, and marking on the closing resistor disc;
step S6: after the detection is finished, the computer equipment can generate a detection report according to the detection result, and meanwhile, the flatness qualification rate is counted according to the detected number of the closing resistance pieces.
9. The method for detecting the flatness of the closing resistor disc as claimed in claim 8, wherein the recording time in the step S2 refers to a starting time for emitting the laser and a returning time for receiving the laser.
10. The method for detecting the flatness of the closing resistor disc according to claim 8, wherein in the step S5, when the flatness data range set in advance is exceeded, the computer receives the feedback signal and transmits the received signal to the laser integration module, and the laser integration module adjusts laser emission energy according to the received signal and utilizes the laser beam to mark an unqualified permanent mark on the surface of the closing resistor disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210547760.9A CN115127484A (en) | 2022-05-18 | 2022-05-18 | Device and method for detecting flatness of closing resistor disc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210547760.9A CN115127484A (en) | 2022-05-18 | 2022-05-18 | Device and method for detecting flatness of closing resistor disc |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117347374A (en) * | 2023-12-05 | 2024-01-05 | 山东扬智汽车科技有限公司 | Multi-station automobile part test bench |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117347374A (en) * | 2023-12-05 | 2024-01-05 | 山东扬智汽车科技有限公司 | Multi-station automobile part test bench |
| CN117347374B (en) * | 2023-12-05 | 2024-02-20 | 山东扬智汽车科技有限公司 | Multi-station automobile part test bench |
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