CN-121995270-A - Automatic leakage detection equipment and control method thereof

CN121995270ACN 121995270 ACN121995270 ACN 121995270ACN-121995270-A

Abstract

The invention relates to an automatic leakage detection device and a control method thereof, and relates to the technical field of electric safety detection, wherein the automatic leakage detection device comprises a conveying structure for conveying workpieces in sequence, a conducting structure for electrifying heating components in the workpieces, and a detection structure for electrifying a metal shell in the workpieces; the conveying structure is provided with an operation station which is convenient for synchronously electrifying and detecting the workpiece, the conduction structure comprises a conductive block which is contacted with the heating component, the detection structure comprises a detection rod which is contacted with the metal shell, the conduction structure and the detection structure are arranged on the conveying structure, and the conductive block and the detection rod are both positioned on the operation station. The invention has the effects of adapting to quality inspection requirements of large-scale production and improving detection efficiency.

Inventors

WANG CHANGMAN
ZHANG WEIGUO
ZHOU MIAO

Assignees

浙江斯大威智能电器有限公司

Dates

Publication Date: 20260508
Application Date: 20260410

Claims (10)

1. An automatic electric leakage detection device is characterized by comprising a conveying structure (1) for conveying workpieces in sequence, a conducting structure (2) for electrifying heating components in the workpieces and a detection structure (3) for electrifying a metal shell in the workpieces; The conveying structure (1) is provided with an operation station (13) which is convenient for synchronously electrifying and detecting the workpiece, the conducting structure (2) comprises a conducting block (21) contacted with a heating component, and the detecting structure (3) comprises a detecting rod (32) contacted with a metal shell; the conducting structure (2) and the detecting structure (3) are arranged on the conveying structure (1), and the conducting block (21) and the detecting rod (32) are both arranged on the operation station (13).
2. An automated electrical leakage detection device according to claim 1, characterized in that the conducting structure (2) further comprises a power supply assembly (22) for providing high voltage current to the conductive block (21) and an adjusting plate (23) for adjusting the position of the conductive block (21); the power supply assembly (22) is electrically connected with the conductive block (21); The adjusting plate (23) is slidably arranged on the conveying structure (1) and is connected with the conductive block (21).
3. An automated electrical leakage detection device according to claim 1, wherein the detection structure (3) further comprises a mounting seat (33) for mounting the detection rod (32), a tension spring (34) for driving the detection rod (32) to always have a tendency to fit the workpiece, and a detection assembly (35) for receiving and analyzing the data acquired by the detection rod (32); The detection rod (32) is electrically connected with the detection assembly (35); one end of the detection rod (32) is rotationally connected with the mounting seat (33), and the tension spring (34) is fixedly arranged between the detection rod (32) and the mounting seat (33).
4. A control method of an automatic leakage detection apparatus, applied to an automatic leakage detection apparatus as set forth in any one of claims 1 to 3, characterized by comprising: step 10, responding to a detection signal, acquiring a breaking current and an interval time, and continuously acquiring a conductive block resistance and a detection rod current; step 11, reading the current of the detection rod based on the interval time and defining the current as a judgment current; Step 12, acquiring acquisition time length, moving speed and workpiece width when the current is inconsistent with the breaking current; step 13, determining the number of bottom layers by combining the acquisition time length, the moving speed and the workpiece width; Step 14, controlling a detection rod (32) to be separated from the metal shell, reading the resistance of the conductive block and defining the resistance as a detection resistance, and determining the number of workpieces through the detection resistance; Step 15, determining a stacking shape by combining the current of the detection rod, the number of bottom layers and the number of workpieces; Step 16, determining shaping parameters according to the stacking shape; Step 17, shaping the workpiece based on shaping parameters and collecting shell resistance; and 18, determining the leakage number through the shell resistor and eliminating.
5. The control method of an automatic leakage detection apparatus according to claim 4, wherein the determination method of the stack shape includes: step 20, determining a current image according to the current of the detection rod; Step 21, obtaining a current peak value, the number of the peak values and the peak-to-peak interval from the current image; step 22, screening peak-to-peak intervals larger than a preset layer change threshold value and taking the peak-to-peak intervals as layer change nodes; Step 23, dividing the current image into a plurality of stable sections based on the layer-changing nodes; Step 24, setting stacking combinations by combining the number of the workpieces and the number of the bottom layers and obtaining corresponding outside workpiece numbers; step 25, screening stacked combinations with the number of the outer workpieces consistent with the number of the peaks and defining the stacked combinations as target combinations; step 26, determining the stacking shape by combining the plateau and the target combination.
6. The control method of an automatic leakage detection apparatus according to claim 5, wherein the method of obtaining the number of peaks comprises: step 30, acquiring a coordinate node and corresponding current amplitude and duration from the current image; step 31, determining initial peak value quantity according to the current amplitude and the corresponding duration time; Step 32, if the current amplitude is larger than a preset amplitude threshold value and the duration is larger than a preset time threshold value, defining the corresponding coordinate node as a continuous leakage node; step 33, correcting the current image by combining the continuous leakage nodes; step 34, reacquiring the peak number based on the corrected current image.
7. The control method of an automatic leakage detection apparatus according to claim 6, wherein the correction method of the current image includes: step 40, reading no-load current from the current of the detection rod and extracting time nodes between the continuous leakage nodes and corresponding current values thereof; Step 41, determining a current reference value according to the time node and the corresponding current value; step 42, determining a reference offset by combining the difference between the current reference value and the no-load current; Step 43, correcting the current value based on the reference offset; And 44, replacing the current values in the continuous leakage nodes in the current image according to the corrected current values, thereby finishing the correction of the current image.
8. The control method of an automatic leakage detection apparatus according to claim 7, wherein the correction method of the layer change node comprises: step 50, if the current amplitude is not greater than the amplitude threshold value and is greater than a preset single-contact threshold value, defining the corresponding current amplitude as a multi-contact current amplitude; step 51, calculating and determining the number of contacts according to the multi-contact current amplitude and the single-contact threshold value; Step 52, determining a new layer-changing node by combining the number of the contacts; And 53, correcting the layer exchange node based on the newly added layer exchange node.
9. The control method of an automatic leakage detection apparatus according to claim 4, wherein the method of determining the leakage number comprises: Step 60, collecting a detection radius; Step 61, determining an acquisition interval according to the width, the moving speed and the detection radius of the workpiece; step 62, sequentially setting workpiece numbers according to the number of the workpieces; step 63, collecting the shell resistance based on the collection interval and the workpiece number; step 64, calculating corresponding duty ratio coefficients by combining the workpiece numbers and the corresponding shell resistances; and 65, screening corresponding workpiece numbers according to the duty ratio coefficient, and defining the workpiece numbers as the electric leakage numbers.
10. The control method of an automatic leakage detection apparatus according to claim 9, wherein the method of determining the leakage number further comprises: Step 70, screening the duty ratio coefficient larger than a preset duty ratio threshold value and defining the corresponding shell resistance as a primary screening resistance; Step 71, calculating average resistance according to all the shell resistances; Step 72, calculating a resistance difference value by combining the primary screening resistance and the average resistance; step 73, defining a workpiece number corresponding to the resistance difference value which is not more than a preset difference value threshold as an interference number, and performing manual rechecking; and step 74, defining the workpiece number corresponding to the resistance difference value larger than the difference value threshold as a leakage number.

Description

Automatic leakage detection equipment and control method thereof Technical Field The invention relates to the technical field of electrical safety detection, in particular to automatic leakage detection equipment and a control method thereof. Background The electric safety detection technology is a core technology branch for guaranteeing the safety of electric equipment, an electric power system and personal and property, and aims to detect key safety indexes such as insulation performance, leakage current, grounding reliability and the like of the electric equipment. The utility model provides a hair curler, it includes the metal casing that can be heated and inboard inlays the heating element of dress, and the outer cladding insulating layer of heating element is in order to realize the electrical isolation, however when the damage appears in the insulating layer, heating element and metal casing switch on can lead to the metal casing electrified, forms electric leakage potential safety hazard, and current detection is whether electrified with heating element circular telegram reuse instrument detection metal casing through the manual work. However, in the implementation process of the detection method, manual single sequential operation is needed, the detection efficiency is low, and the quality inspection requirement of large-scale production is difficult to adapt. Disclosure of Invention In order to meet the quality inspection requirements of large-scale production and improve the detection efficiency, the invention provides automatic leakage detection equipment and a control method thereof. In a first aspect, the present invention provides an automatic leakage detection apparatus, which adopts the following technical scheme: An automatic leakage detection device comprises a conveying structure for conveying workpieces in sequence, a conduction structure for electrifying heating components in the workpieces and a detection structure for electrified detection of metal shells in the workpieces; The conveying structure is provided with an operation station which is convenient for synchronously electrifying and detecting the workpiece, the conduction structure comprises a conductive block which is contacted with the heating component, and the detection structure comprises a detection rod which is contacted with the metal shell; The conducting structure and the detecting structure are arranged on the conveying structure, and the conducting block and the detecting rod are both positioned on the operation station. Through adopting above-mentioned technical scheme, wait to detect the work piece and carry to the operation station by conveying structure in proper order, conducting shoe and measuring rod are connected the work piece on the operation station simultaneously, carry out synchronous live detection to metal casing when realizing the component circular telegram that generates heat, and full automatization detects, improves detection efficiency. Optionally, the conducting structure further comprises a power supply component for providing high-voltage current for the conductive block and an adjusting plate for adjusting the position of the conductive block; the power supply assembly is electrically connected with the conductive block; The adjusting plate is slidably arranged on the conveying structure and connected with the conductive block. Through adopting above-mentioned technical scheme, the regulating plate slides and installs in conveying structure and be connected with the conducting block, can adjust the spatial position of conducting block through the regulating plate to the work piece of adaptation different specifications, unidimensional improves the commonality of equipment. Optionally, the detection structure further comprises an installation seat for installing the detection rod, a tension spring for driving the detection rod to always have a trend of being attached to the workpiece, and a detection assembly for receiving and analyzing data acquired by the detection rod; the detection rod is electrically connected with the detection assembly; One end of the detection rod is rotationally connected with the mounting seat, and the tension spring is fixedly arranged between the detection rod and the mounting seat. Through adopting above-mentioned technical scheme, the elastic force of measuring rod and mount pad swivelling joint cooperation extension spring can order about the measuring rod and have the trend of laminating work piece all the time, guarantees the reliable contact of measuring rod and work piece metal casing, avoids because of the detection data loss or the error that the contact failure leads to. In a second aspect, the present application provides a control method for an automatic leakage detection device, which is applied to the automatic leakage detection device in the first aspect, and adopts the following technical scheme: A control method of an automated electrical leakage