Fuse tester

Abstract

The utility model discloses a fuse tester. The fuse tester comprises a DC power supply used for outputting a current required by a test; the electronic load is used for being matched with the direct-current power supply to test the fuse; the voltage collector is used for collecting voltage drop data at two ends of the fuse; the temperature collector is used for collecting temperature data of the fuse; the touch screen is used for man-machine interaction; the middle computer is respectively connected with the direct-current power supply, the electronic load, the voltage collector, the temperature collector and the touch screen, and the middle computer is provided with an external communication interface used for being connected with an upper computer. According to the utility model, the voltage drop and temperature data of the fuse in the test process can be acquired in real time, and the test data is more complete and can reflect the performance of the fuse in the actual working environment more accurately.

Description

TECHNICAL FIELD

[0001] The utility model relates to fuse testing technical field, specifically relates to a fuse tester. BACKGROUND

[0002] Fuse, such as fuse, is when the current exceeds the specified value, with the heat generated by the melt, open circuit of a kind of electrical appliance. Its wide application in high and low voltage distribution system and control system and electrical equipment, as short circuit and overcurrent protector, is one of the most common protective devices. With the improvement of fuse product performance, the testing requirements are also getting higher and higher.

[0003] The intelligent fuse tester adopts advanced electronic technology and computer technology, can automatically complete the test of fuse, and generates detailed test report, the instrument can detect the fuse time and the fuse current of the fuse tube, meets the fuse, durability test requirement in the relevant standard. The appearance of intelligent fuse tester greatly improves the efficiency and precision of fuse test, also reduces the test cost and operation difficulty, it has become one of the indispensable test tools in the field of electronic equipment manufacturing.

[0004] However, the existing intelligent fuse tester cannot collect the temperature and voltage drop of the fuse in real time during the test process, mainly has the following defects:

[0005] 1. Incomplete test data and limited test precision: the performance evaluation of fuse not only depends on its fuse time and fuse current, but also is closely related to its temperature and voltage drop in the test process. Real-time temperature and voltage drop data can provide the behavior information of fuse under the condition close to its limit. Without real-time data, the tester cannot accurately reflect the performance of fuse in the actual working environment, thereby affecting the accuracy and reliability of the test result.

[0006] 2. Unable to monitor abnormalities in real time: during the test process, if the fuse has abnormal conditions (such as overheating or abnormal voltage drop), real-time temperature and voltage drop monitoring can immediately find these problems. Without such real-time monitoring, abnormalities may not be discovered in time, thereby causing the unreliability of the test result or potential safety risks in the test process. INVENTION CONTENTS

[0007] In order to overcome the problems of incomplete test data, limited test precision and unable to monitor abnormalities in real time of the existing intelligent fuse tester, the utility model provides a fuse tester.

[0008] The technical scheme of the utility model is as follows:

[0009] A fuse tester, comprising

[0010] a direct current power supply for outputting a test required current;

[0011] an electronic load for testing a fuse in cooperation with the direct current power supply;

[0012] a voltage collector for collecting voltage drop data of the fuse;

[0013] a temperature collector for collecting temperature data of the fuse;

[0014] a touch screen for human-computer interaction;

[0015] a middle machine connected with the direct current power supply, the electronic load, the voltage collector, the temperature collector and the touch screen respectively, and an external communication interface for connecting an upper computer is arranged on the middle machine.

[0016] As a preferred scheme of the utility model, a power switch is arranged on the direct current power supply.

[0017] As a preferred scheme of the utility model, a power indicator light is arranged on the direct current power supply.

[0018] As a preferred scheme of the utility model, an output terminal for connecting both ends of the fuse is arranged on the electronic load.

[0019] As a preferred scheme of the utility model, a voltage drop measurement interface for connecting both ends of the fuse is arranged on the voltage collector.

[0020] As a preferred scheme of the utility model, a temperature line interface is arranged on the temperature collector.

[0021] As a preferred scheme of the utility model, the external communication interface comprises at least one of a LAN interface, an RS485 interface and an RS232 interface.

[0022] As a preferred scheme of the utility model, a communication interface for communication of the middle machine is arranged on the direct current power supply, the electronic load, the voltage collector, the temperature collector and the touch screen.

[0023] As a preferred scheme of the utility model, an expansion interface for connecting an oscilloscope is arranged on the middle machine.

[0024] As a preferred scheme of the utility model, the fuse tester further comprises:

[0025] an oscilloscope for displaying various test result waveforms, and the oscilloscope is connected with the middle machine.

[0026] Compared with the prior art, the fuse tester has the beneficial effects that:

[0027] The fuse tester provided by the utility model can collect voltage drop and temperature data of the fuse in the testing process in real time, fills the blank of the existing tester in real-time data collection, and makes the testing data more complete, so that the testing data more accurately reflects the performance of the fuse in the actual working environment; in addition, the real-time temperature and voltage drop monitoring function enables the tester to immediately find abnormal conditions of the fuse in the testing process, such as overheating or abnormal voltage drop, which helps to find potential problems in time and avoids the unreliability of the testing result or the safety risk in the testing process. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating labor.

[0029] Figure 1 It is the structural schematic diagram of the fuse tester in an embodiment of the utility model;

[0030] Figure 2 It is the structural schematic diagram of the fuse tester in another embodiment of the utility model;

[0031] Figure 3 It is the structural schematic diagram of the fuse tester in still another embodiment of the utility model.

[0032] In the drawings,

[0033] 1, DC power supply; 11, power switch; 12, power indicator lamp; 2, electronic load; 21, output terminal; 3, voltage collector; 31, voltage drop measurement interface; 4, temperature collector; 41, temperature line interface; 5, touch screen; 6, mid machine; 61, external communication interface; 62, expansion interface; 7, oscilloscope. DETAILED DESCRIPTION

[0034] In order to make the technical problems, technical solutions and beneficial effects to be solved by the utility model more clearly, the following will further detail the utility model by combining with the drawings and embodiments.It should be noted that: similar signs and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0035] It should be noted that the terms "mounting", "setting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise explicitly limited.

[0036] Please refer to Figure 1 The embodiment provides a fuse tester, comprising a direct current power supply 1, an electronic load 2, a voltage collector 3, a temperature collector 4, a touch screen 5 and a central machine 6, the central machine 6 is connected with the direct current power supply 1, the electronic load 2, the voltage collector 3, the temperature collector 4 and the touch screen 5 respectively. The direct current power supply 1 is used for outputting the required current for testing. The electronic load 2 is used for cooperating with the direct current power supply 1 to test the fuse, including conventional melting time test, durability test, pulse test, current gradient test, current cycle impact test and the like. The voltage collector 3 is used for collecting the voltage drop data of the fuse. The temperature collector 4 is used for collecting the temperature data of the fuse. The electronic load 2 module cooperates with the voltage collector 3 and the temperature collector 4, and together constructs a high-efficiency and accurate fuse testing system, realizing the measurement of the voltage drop and temperature resistance of the fuse. The touch screen 5 is used for human-computer interaction, including function setting and test data display. The central machine 6 is used for controlling the operation of the above-mentioned devices, and in addition, an external communication interface 61 for connecting the upper computer is arranged on the central machine 6. Through the external communication interface 61, the test data can be conveniently uploaded to the upper computer for further analysis and processing, so that the efficiency and accuracy of data management are improved, or the operation of each device is controlled through the upper computer.

[0037] The fuse tester of the embodiment can collect the voltage drop and temperature data of the fuse in the testing process in real time by integrating the voltage collector 3 and the temperature collector 4, fills the blank of the existing tester in real-time data collection, and the test data is more complete, so that the test data more accurately reflects the performance of the fuse in the actual working environment; in addition, the real-time temperature and voltage drop monitoring function enables the tester to immediately find abnormal conditions of the fuse in the testing process, such as overheating or abnormal voltage drop, which helps to find potential problems in time and avoid the unreliability of the test results or the safety risk in the testing process.

[0038] In one embodiment, the direct current power supply 1 adopts a low-voltage, high-current, and high-power direct current power supply. It is supplied with 3-phase 4-wire power supply, without N line and phase sequence requirement, which simplifies the power supply connection and configuration. The allowable voltage range of the 3-phase input is 340V AC~420V AC, and the frequency is 47Hz~63Hz, which improves its versatility and adaptability. In addition, in order to test the safety, the voltage of the direct current power supply 1 is set to 15V and cannot be adjusted. In order to realize the test application of high voltage or large current, the direct current power supply 1 can be realized by parallel and series connection, so that the tester can meet the needs of different types of fuse test, and improve its test range and applicability.

[0039] Referring to Figure 2 In one embodiment, the direct current power supply 1 is provided with a power switch 11 for facilitating the user to control the opening and closing of the power supply. This not only saves energy, but also prevents accidental start or stop of the power supply, thereby improving the safety and reliability of the tester.

[0040] Referring to Figure 2 In one embodiment, the direct current power supply 1 is provided with a power indicator 12 for indicating the state (such as on or off) of the power supply, which helps the user to quickly understand the power supply situation of the tester, and facilitates the troubleshooting and daily maintenance.

[0041] Referring to Figure 2 In one embodiment, the electronic load 2 is provided with output terminals 21 for connecting the two ends of the fuse, so that the test process is more convenient and efficient. The user only needs to connect the fuse to the output terminals 21 to start the test.

[0042] Referring to Figure 2 In one embodiment, the voltage collector 3 is provided with a voltage drop measurement interface 31 for connecting the two ends of the fuse. After the voltage drop measurement interface 31 is connected to the two ends of the fuse, it can realize real-time collection of the voltage drop data of the fuse during the test process, thereby helping the user to accurately evaluate the performance and stability of the fuse.

[0043] Referring to Figure 2 In one embodiment, the temperature collector 4 is provided with a temperature line interface 41 for connecting a temperature sensor (such as a thermocouple or a thermistor). After connecting the temperature sensor, it needs to be closely attached or embedded around the fuse to ensure that the temperature data of the fuse during the test process can be accurately measured, thereby helping the user to accurately evaluate the performance and stability of the fuse.

[0044] In one embodiment, the external communication interface 61 includes at least one of a LAN interface, an RS485 interface, and an RS232 interface. These interfaces can be used to realize data exchange and communication between the fuse tester and the host computer. Among them, the LAN interface (usually referred to as the Ethernet interface) is used to connect the fuse tester to the local area network (LAN), and then connect to the host computer through the local area network, so as to realize remote monitoring and data transmission through the host computer. The LAN interface complies with the IEEE 802.3 standard, and is usually physically connected using an RJ-45 connector. RS485 and RS232 are two commonly used serial communication interface standards. The RS485 interface supports differential signal transmission and has longer transmission distance and stronger anti-interference ability, and is suitable for multi-device connection and long-distance communication. The RS232 interface uses single-ended signal transmission, which has shorter transmission distance, but simple connection and lower cost. In actual application, appropriate interface standards can be selected according to communication distance, device quantity, cost and other factors.

[0045] In one embodiment, a communication interface for communication with the host computer is arranged on the DC power supply, the electronic load, the voltage collector, the temperature collector, and the touch screen. The communication interface can adopt one or more of a LAN interface, an RS485 interface, an RS232 interface, a USB interface, and a CAN interface, and the present application does not limit the communication interface.

[0046] Referring to Figure 2 In one embodiment, the host computer 6 is provided with an expansion interface 62, and the host computer 6 is connected to the oscilloscope 7 through the expansion interface 62. During the connection process, it is necessary to ensure that the interface type, signal format, and transmission rate parameters are matched. After the connection is completed, the parameters (such as sampling rate, trigger condition, etc.) of the oscilloscope 7 can be configured through the software interface of the host computer 6, and the test waveform data can be viewed in real time.

[0047] Referring to Figure 3 In one embodiment, the fuse tester further comprises an oscilloscope 7 connected to the host computer 6, and the oscilloscope 7 is used to display various test result waveforms.

[0048] It should be understood that those skilled in the art can make improvements or changes according to the above description, and all these improvements and changes shall fall within the protection scope of the appended claims of the present application.

[0049] The above describes the present application by way of example with reference to the drawings. Obviously, the implementation of the present application is not limited to the above manner. Any improvement or change using the method concept and technical solution of the present application, or directly applying the concept and technical solution of the present application to other occasions without improvement, shall fall within the protection scope of the present application.

Claims

1. A fuse tester characterized by, The utility model relates to a kind of test system of fuse, including DC power supply for outputting the current required for test; Electronic load for testing fuse with the DC power supply; Voltage collector for collecting voltage drop data of both ends of fuse; Temperature collector for collecting temperature data of fuse; Touch screen for human-computer interaction; Middle station, the middle station is connected with the DC power supply, the electronic load, the voltage collector, the temperature collector and the touch screen respectively, and the external communication interface for connecting host computer is arranged on the middle station.

2. The fuse tester of claim 1, wherein, The DC power supply is provided with power switch.

3. The fuse tester of claim 1, wherein, The DC power supply is provided with power indicator.

4. The fuse tester of claim 1, wherein, The output terminal for connecting both ends of fuse is arranged on the electronic load.

5. The fuse tester of claim 1, wherein, The voltage drop measurement interface for connecting both ends of fuse is arranged on the voltage collector.

6. The fuse tester of claim 1, wherein, Temperature line interface is arranged on the temperature collector.

7. The fuse tester of claim 1, wherein, The external communication interface includes at least one of LAN interface, RS485 interface and RS232 interface.

8. The fuse tester of claim 1, wherein, The communication interface for the middle station to communicate is arranged on the DC power supply, the electronic load, the voltage collector, the temperature collector and the touch screen.

9. The fuse tester of claim 1, wherein, The expansion interface for connecting oscilloscope is arranged on the middle station.

10. The fuse tester of claim 1, wherein, Also include: Oscilloscope for showing various test result waveforms, and the oscilloscope is connected with the middle station.

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