Crimping tube quality detection device based on slight resistance changes

Abstract

The present application relates to a crimp tube quality detection device based on slight resistance changes, including: a test connector for connecting to both ends of the crimping position of the crimping tube; a wireless communication device for wireless communication with a remote terminal; a milliohm resistance measuring device for sending the detected resistance data to the remote terminal through the wireless communication device; wherein the milliohm resistance measuring device connects the test connector and the wireless communication device; the resistance data is used by the remote terminal to perform quality analysis on the crimping tube. The quality of the crimping tube can be judged by detecting the resistance changes at both ends of the crimping position of the crimping tube, and the resistance statistics of the crimping tube quality detection in different states can be used to achieve qualitative analysis of the quality defect level of the crimping tube. At the same time, wireless transmission is used to realize long-distance transmission of data, which is less affected by external factors and avoids possible errors or human intervention in the measurement and recording process, facilitating data acquisition and recording, and achieving high detection accuracy.

Description

Technical Field

[0001] The present application relates to the technical field of power transmission line monitoring, and in particular to a crimping tube quality detection device based on slight resistance changes. Background Art

[0002] Among the hidden dangers of the power transmission line itself, the hidden dangers caused by the quality problems of the crimping tube account for a large part. Due to the poor crimping process, it is easy to cause the connection positions such as the joint tube and the drainage wire clamp to heat up, and even cause accidents such as the breakage of the ground wire, which seriously affects the safe and stable operation of the power transmission line.

[0003] Traditional methods of quality inspection for crimped tubes include X-ray inspection and infrared temperature measurement. Infrared temperature measurement is the most widely used inspection method due to its simplicity and ease of use. It is an indirect measurement method that detects equipment defects by detecting the heat that may be caused by process defects in the crimped tube. In terms of applicable conditions, it can only be used to detect defects in crimped tubes during operation, and is also affected by line load, environmental climate and other factors. Although X-ray inspection equipment can more intuitively observe the process quality of crimped tubes, the inspection instrument is bulky and not conducive to high-altitude operations. It requires an aerial work platform and requires multiple people to collaborate in high-altitude operations, and is easily disturbed by human errors. Traditional methods of quality inspection for crimped tubes are easily affected by external factors and have low detection accuracy. Summary of the invention

[0004] Based on this, it is necessary to provide a crimping tube quality inspection device based on subtle resistance changes that is less affected by external factors and has high detection accuracy, in order to address the problem that traditional crimping tube quality inspection methods are easily affected by external factors.

[0005] A crimp tube quality detection device based on slight resistance value changes, comprising:

[0006] A test connector for connecting to both ends of the crimping position of the crimping tube;

[0007] wireless communication means for wirelessly communicating with a remote terminal;

[0008] Sending the detected resistance data to the milliohm resistance measuring device of the remote terminal via the wireless communication device;

[0009] Wherein, the milliohm resistance measuring device is connected to the test connector and the wireless communication device; the resistance value data is used by the remote terminal to perform quality analysis on the crimping tube.

[0010] In one embodiment, the test connection component is a clamp.

[0011] In one embodiment, the test connector is a test pen.

[0012] In one embodiment, the number of the test connectors is two.

[0013] In one embodiment, the wireless communication device is a 4G or WIFI communication device.

[0014] In one of the embodiments, the crimp tube quality detection device further includes a power supply device connected to the milliohm resistance measuring device.

[0015] In one of the embodiments, the power supply device includes an energy storage element connected to the milliohm resistance measuring device.

[0016] In one embodiment, the energy storage element is a rechargeable lithium battery.

[0017] In one of the embodiments, the power supply device further includes a charging interface and a charging management circuit, and the charging management circuit is connected to the charging interface, the energy storage element and the milliohm resistance measuring device.

[0018] In one of the embodiments, the crimp tube quality inspection device further includes a remote terminal for wireless communication with the wireless communication device.

[0019] The above-mentioned crimp tube quality detection device based on slight resistance changes, when the test connector is connected to the two ends of the crimping position of the crimping tube, the milliohm resistance measuring device can detect slight resistance changes, and send the collected resistance data to the remote terminal to perform quality analysis on the crimping tube. The quality of the crimping tube can be judged by detecting the resistance changes at both ends of the crimping position of the crimping tube, and the resistance statistics of the crimping tube quality detection in different states can be realized to achieve qualitative analysis of the quality defect level of the crimping tube. At the same time, wireless transmission is used to realize long-distance transmission of data, which is convenient for users to obtain and judge data, and is less affected by external factors, and avoids possible mistakes or human intervention in the measurement and recording process, which is convenient for data acquisition and recording, and has high detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural block diagram of a crimp tube quality detection device based on slight resistance value changes in one embodiment;

[0021] Figure 2 It is a structural block diagram of a crimp tube quality detection device based on slight resistance value changes in another embodiment;

[0022] Figure 3 It is a structural schematic diagram of a crimp tube quality detection device based on slight resistance value changes in one embodiment;

[0023] Figure 4 1 is a structural diagram of a crimp tube quality detection device based on slight resistance changes in one embodiment. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0025] In one embodiment, a device for detecting the quality of a crimped tube based on slight resistance changes is provided. Figure 1 As shown, it includes a test connector 110, a wireless communication device 120 and a milliohm resistance measuring device 130. The milliohm resistance measuring device 130 is connected to the test connector 110 and the wireless communication device 120. The test connector 110 is used to connect to the two ends of the crimping position of the crimping tube, the wireless communication device 120 is used to wirelessly communicate with the remote terminal 210, and the milliohm resistance measuring device 130 sends the detected resistance data to the remote terminal 210 through the wireless communication device 120. Among them, the resistance data is used by the remote terminal 210 to perform quality analysis on the crimping tube.

[0026] In view of the fact that the quality of the crimping tube process for high-voltage transmission line conductors and ground wires is of great significance to the safe operation of the line, the above-mentioned crimping tube quality detection device based on subtle resistance changes detects the resistance changes at both ends of the crimping position of the crimping tube to determine the quality of the crimping tube. The milliohm-level resistance measuring device 130 can detect subtle ohm values ​​to monitor the resistance at both ends of the crimping position, and qualitative analysis of the defect level can be achieved by statistically analyzing the resistance values ​​of the crimping tube quality detection in different states.

[0027] The type of milliohm resistance measuring device 130 is not unique, and specifically, a milliohm resistance measuring instrument on the market can be used. Among them, the number of test connectors 110 is two. The two test connectors 110 are respectively connected to the two test ports of the milliohm resistance measuring device 130 through wires. When performing quality inspection on the crimping tube, the user connects the two test connectors 110 to the two ends of the crimping position of the crimping tube, which can support the detection of different types of wires and crimping tubes of different sizes through the milliohm resistance measuring device 130, and the detected resistance value data is sent to the remote terminal 210 through the wireless communication device 120.

[0028] The above-mentioned crimp tube quality detection device based on slight resistance changes, when the test connector 110 is connected to the two ends of the crimping position of the crimping tube, the milliohm resistance measuring device 130 can detect slight resistance changes, and send the collected resistance data to the remote terminal 210 to perform quality analysis on the crimping tube. The quality of the crimping tube can be judged by detecting the resistance changes at the two ends of the crimping position of the crimping tube, and the resistance statistics of the crimping tube quality detection in different states can be realized to realize the qualitative analysis of the quality defect level of the crimping tube. At the same time, wireless transmission is used to realize long-distance transmission of data, which is convenient for users to obtain and judge data, and is less affected by external factors, and avoids possible mistakes or human intervention in the measurement and recording process, which is convenient for data acquisition and recording, and has high detection accuracy.

[0029] The specific structure of the test connector 110 is not unique, and a universal fixture, such as a wiring clamp, or a test pen can be used. In one embodiment, the test connector is a fixture. Specifically, two fixtures are connected to the two ends of the crimping position of the crimping tube to detect the resistance value. The fixture can be used to tightly connect the commonly used wires and crimping tubes, which is convenient for detecting different types of wires and crimping tubes of different sizes, and improves the convenience of detection.

[0030] In another embodiment, the test connector 110 is a test pen. Specifically, when performing quality inspection, after connecting two test pens to the test ports of the milliohm resistance measuring device 130, the user can hold the test pen and contact the metal probe of the test pen with the two ends of the crimping position of the crimping tube, and the resistance value detection can also be achieved.

[0031] The specific type of the wireless communication device 120 is not unique, and can be a communication device such as WIFI, Bluetooth or infrared. In one embodiment, the wireless communication device 120 is a 4G or WIFI communication device. The 4G or WIFI communication device is used to communicate with the remote terminal 210 to achieve long-distance transmission of data, which is convenient for users to obtain data and judge the data, thereby ensuring the accuracy of detection.

[0032] Further, in one embodiment, if Figure 2As shown, the crimp tube quality detection device also includes a power supply device 140 connected to the milliohm resistance measuring device 130. The power supply device 140 is used to power the milliohm resistance measuring device 130 to ensure the normal operation of the milliohm resistance measuring device 130. The specific structure of the power supply device 140 is not unique. In one embodiment, the power supply device 140 includes an energy storage element connected to the milliohm resistance measuring device 130, and the energy storage element is used to store electrical energy to power the milliohm resistance measuring device 130. The energy storage element can specifically be a storage battery, a lithium battery, or a charging capacitor. In this embodiment, the energy storage element is a rechargeable lithium battery, which can be charged to supplement electrical energy when the power is insufficient. Specifically, the energy storage element is a 24V rechargeable lithium battery, which outputs a 24V voltage to power the milliohm resistance measuring device 130.

[0033] Furthermore, in one embodiment, the power supply device 140 also includes a charging interface and a charging management circuit, and the charging management circuit connects the charging interface, the energy storage element, and the milliohm resistance measuring device 130. Among them, the charging interface is used to access the mains, and the charging management circuit converts the mains when the charging interface is connected to the mains, and uses the converted voltage to power the milliohm resistance measuring device 130 and charge the energy storage element. When the charging interface is not connected to the mains, the charging management circuit uses the electric energy stored in the energy element to power the milliohm resistance measuring device 130.

[0034] In one embodiment, the crimp tube quality detection device further includes a remote terminal 210 that wirelessly communicates with the wireless communication device 120. The remote terminal 210 may be a mobile phone, a desktop computer, or a notebook computer. The remote terminal receives the resistance data transmitted by the wireless communication device 120, and performs quality analysis on the crimp tube according to the resistance data.

[0035] Specifically, the remote terminal 210 determines the quality of the crimped tube according to the resistance ratio of the crimped part to the wire part, and records the data and the judgment result. Among them, the specific way for the remote terminal 210 to analyze the quality of the crimped tube is not unique. The remote terminal 210 can determine the type of resistance data received according to a preset order, for example, determine whether the received resistance value is the resistance value of the crimped part or the resistance value of the wire part. The remote terminal 210 can also determine the type of resistance data according to the instructions input by the operator after receiving the resistance data. After determining the type of resistance data, the remote terminal 210 determines the resistance ratio of the crimped part to the wire part by calculation, and then detects the quality of the crimped tube according to the preset standard.

[0036] Specifically, the performance parameters of the standard crimping tube can be measured in advance to obtain the resistance ratio of the crimping part and the conductor part of the standard crimping tube (which can be called the standard resistance ratio) and save it in the remote terminal 210. After the remote terminal 210 calculates the resistance ratio of the crimping tube to be tested, it compares it with the standard resistance ratio. If the difference between the two is within the allowable error range, the quality of the crimping tube is qualified; otherwise, the quality of the crimping tube is unqualified.

[0037] In addition, the performance parameters of the crimping tubes of different qualities may be measured in advance to establish a correspondence between different quality levels and corresponding resistance value ratio ranges. For example, the quality levels may be divided into three levels: standard, qualified, and poor quality, and each level corresponds to a resistance value ratio range. The correspondence between the quality level and the corresponding resistance value ratio range is stored in the remote terminal 210. After the remote terminal 210 calculates the resistance value ratio of the crimping tube to be tested, it may analyze in which resistance value ratio range the resistance value ratio falls, and use the corresponding quality level as the quality inspection result of the crimping tube to be tested.

[0038] In one embodiment, the remote terminal 210 includes a controller, a wireless communicator, and a memory. The controller is connected to the wireless communicator and the memory, and the wireless communicator communicates with the wireless communication device 120. The controller receives the resistance data sent by the wireless communication device 120 through the wireless communicator to perform crimping tube analysis, and stores the judgment result and the resistance data in the memory. The specific types of the controller and the memory are not unique. In one embodiment, the controller can use an MCU (Micro Control Unit). Furthermore, the memory can use a Nandflash memory chip.

[0039] In one embodiment, the remote terminal 210 also includes an interactive device connected to the controller, and the controller also sends the judgment result and resistance data to the interactive device for display so that the user can view it. The structure of the interactive device is not unique. In one embodiment, the interactive device includes a button and a display connected to the controller. Among them, the display can specifically be an LCD (Liquid Crystal Display) display screen, an LED (Liquid Crystal Display) display screen, or an LED digital tube, etc. In this embodiment, the display is an LCD display screen. In addition, in another embodiment, the interactive device can also use a touch display screen to perform human-computer interaction through the touch display screen, which is simple and quick to operate.

[0040] In addition, in one embodiment, the crimp tube quality detection device further includes a box, in which the wireless communication device 120, the ohm resistance measuring device 130 and the power supply device 140 are all disposed. The box protects each device, reduces the risk of device damage, and improves the safety of the crimp tube quality detection device. Furthermore, a handle is provided on the box for easy carrying by the user.

[0041] In order to facilitate a better understanding of the above-mentioned crimping tube quality detection device based on slight resistance changes, a detailed explanation is given below in conjunction with specific embodiments.

[0042] Among the traditional means of checking the crimping quality, infrared temperature measurement can only be used to detect the defects of the crimping tube during operation, and is also affected by line load, environmental climate and other factors; X-ray detection equipment has the problem that the detection instrument is bulky and not conducive to high-altitude operation, and requires an aerial work platform, and requires multiple people to work together at high altitude, and there are also problems such as high cost and radiation. In view of the fact that the process quality of the crimping tube of the conductor and ground wire of the high-voltage transmission line is of great significance to the safe operation of the line, a new type of crimping tube quality detection device based on subtle resistance changes is proposed to timely discover the process defects of the crimping tube under economical, reasonable and convenient conditions. The quality of the crimping tube is judged by detecting the resistance changes at both ends of the crimping position of the crimping tube. The resistance monitoring at both ends of the crimping position is mainly achieved by developing a device that can detect subtle ohmic values, and the qualitative analysis of the defect level is achieved by statistically analyzing the resistance values ​​of the crimping tube quality detection in different states. At the same time, the wireless transmission system is used to realize the long-distance transmission of data, which is convenient for users to obtain data and judge the data, and ensure the accuracy of the detection.

[0043] The structure of the crimp tube quality detection device is as follows: Figure 3 As shown, the device is composed of a milliohm resistance measuring device 130, a test connector 110, a power supply device 140, a wireless communication device 120, and a remote terminal 210. The power supply device 140 is powered by a 24V rechargeable lithium battery. The milliohm resistance measuring device 130 transmits the measured resistance value to the remote terminal 210 through the wireless communication device 120. The wireless communication device 120 transmits the received resistance data to the remote terminal 210 through a 4G network, a self-built WIFI network, etc. The remote terminal 210 receives the resistance data, intelligently determines the crimping tube according to the resistance value ratio of the crimping part and the wire part, and records the data and the judgment results.

[0044] like Figure 4 As shown, the test connector 110 uses a clamp, which can tightly connect the common wire and the crimping tube 200, and is used to test different types of wires and crimping tubes of different sizes. In addition, the milliohm resistance measuring device 130, the power supply device 140, and the wireless communication device 120 are installed in the box 150.

[0045] The above-mentioned crimping tube quality detection device based on slight resistance changes can evaluate the process quality of high-voltage transmission line conductors and ground wire crimping tubes. Compared with the existing infrared temperature measurement and X-ray detection technology, it has the advantages of less influence from external factors, light equipment, unlimited transmission, and fewer high-altitude workers. The remote data transmission function avoids possible errors or human intervention in the measurement and recording process, facilitates data acquisition and recording, and ensures the accuracy of detection. The use of a clamp can tightly connect most commonly used wires and crimping tubes to achieve detection of different types of wires and crimping tubes of different sizes.

[0046] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0047] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A crimp tube quality detection device based on slight resistance changes, characterized in that: include: Remote terminal; A test connector for connecting to both ends of the crimping position of the crimping tube; wireless communication means for wirelessly communicating with said remote terminal; Sending the detected resistance data to the milliohm resistance measuring device of the remote terminal via the wireless communication device; The milliohm resistance measuring device is connected to the test connector and the wireless communication device; the resistance data is used by the remote terminal to perform quality analysis on the crimping tube; after determining the type of the resistance data, the remote terminal detects the quality of the crimping tube by calculating the resistance ratio of the crimping part to the wire part and the preset standard; Wherein, the number of the test connectors is two; and the wireless communication device is a 4G or WIFI communication device.

2. The crimp tube quality detection device according to claim 1, characterized in that: The test connection piece is a fixture.

3. The crimp tube quality detection device according to claim 1, characterized in that: The test connecting piece is a test pen.

4. The crimp tube quality inspection device according to claim 1, characterized in that: The device also includes a power supply device connected to the milliohm resistance measuring device.

5. The crimp tube quality inspection device according to claim 4, characterized in that: The power supply device includes an energy storage element connected to the milliohm resistance measuring device.

6. The crimp tube quality inspection device according to claim 5, characterized in that: The energy storage element is a rechargeable lithium battery.

7. The crimp tube quality inspection device according to claim 5, characterized in that: The power supply device also includes a charging interface and a charging management circuit, and the charging management circuit is connected to the charging interface, the energy storage element and the milliohm resistance measuring device.

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