CN102519599A - Fuse automatic temperature measurement system - Google Patents

Abstract

The invention relates to a fuse automatic temperature measurement system, which is used to automatically detect the temperature of each melt in a fuse group in a fuse life evaluation system, which includes a test device and a control device; the test device includes a temperature sensor, a drive temperature sensor The mobile action mechanism; the control device is respectively connected with the temperature sensor and the action mechanism in signal, the control device collects and stores the temperature data of each melt measured by the temperature sensor, and the control device controls the movement of the action mechanism. Since the present invention adopts the control device to control the test device to automatically measure and save the temperature of each melt in the fuse group, it can reduce the measurement error caused by factors such as the method of using the instrument, the measurement time, and the measurement location.

Description

Automatic fuse temperature measurement system

technical field

The invention relates to an automatic fuse temperature measuring system used in a fuse life test and evaluation system to measure and record the temperature of each melt in a fuse group.

Background technique

During the use of the fuse, due to the current flowing through itself and the influence of the external environment, it will inevitably undergo aging and degradation, which will affect its service life. Studies have shown that as long as the operating environment can be guaranteed, the life of the fuse depends mainly on the state of the melt. The main aging mechanism of the fuse melt under energized conditions is metal electromigration, that is, ion migration in the metal. This migration will cause mass loss in a local area and voids, or mass accumulation and hillocks or solidification. The burrs cause metal defects, increase the resistance, cause local overheating, and the melt temperature rises. The high temperature will accelerate the process of metallization electromigration, further increase the defects, and gradually accumulate until the melt melts.

When performing tests such as life evaluation and variable acceleration factor life evaluation of fuses, it is necessary to measure the temperature of the melt. But at present, the melt temperature test still adopts the method of manual measurement and recording, which cannot avoid errors caused by measurement time, instrument use method, measurement position, measurement angle, reading, etc.

Contents of the invention

The purpose of the present invention is to provide an automatic fuse temperature measurement system which reduces errors and improves the accuracy of temperature measurement data.

In order to achieve the above object, the technical solution adopted by the present invention is: a fuse automatic temperature measurement system, which is used to automatically detect the temperature of each melt in the fuse group in the fuse life evaluation system, which includes

A test device, the test device includes a temperature sensor and an action mechanism that drives the temperature sensor to move;

A control device, the control device is connected to the temperature sensor and the action mechanism respectively, and the control device collects and stores the temperature data of each of the melts measured by the temperature sensor , the control device controls the movement of the action mechanism.

Using the control device to control the test device to automatically measure and save the temperature of each melt in the fuse group can reduce the measurement error caused by factors such as the method of use of the instrument, measurement time, and measurement location.

Preferably, the temperature sensor is a non-contact temperature sensor. The non-contact temperature sensor can be used for measurement without changing the temperature field of the measured melt, which improves the measurement accuracy.

Preferably, the temperature sensor is an infrared thermal imaging temperature sensor.

Preferably, the action mechanism includes a stepper motor that is fixedly connected to the temperature sensor and signally connected to the control device, a track that matches the stepper motor, and the The track is arranged along the arrangement direction of the melts.

Preferably, it also includes a displacement sensor that is signally connected to the control device and monitors the position of the temperature sensor. The control device can control the action mechanism according to the position of the temperature sensor detected by the displacement sensor, so as to precisely adjust the measurement position of the temperature sensor.

Preferably, the control device is a program-controlled device. The use of program-controlled devices can reduce the wiring in the system and simplify the system structure.

Preferably, the automatic fuse temperature measurement system has two working modes: cycle measurement and fixed-point measurement, and the control device controls the automatic fuse temperature measurement system according to the temperature state of the fuse group switch between the two working modes described;

When the automatic temperature measurement system of the fuse is in the cyclic measurement working mode, the action mechanism drives the temperature sensor to measure the temperature of each of the melts one by one and transmits the temperature measurement value to the The above-mentioned control device is stored, and a measurement cycle is completed, and the first time interval passes between two adjacent measurement cycles;

When the fuse automatic temperature measurement system is in the fixed-point measurement working mode, the temperature sensor continuously measures the temperature of a certain melt and transmits the temperature measurement value to the control The device stores, and a second time interval elapses between two adjacent measurements.

Preferably, when the automatic fuse temperature measurement system adopts the cyclic measurement working mode, if the difference between two consecutive measured values of the temperature of a certain melt is greater than the first temperature difference, the The fuse automatic temperature measurement system automatically converts to the fixed-point measurement work mode and measures the temperature of the melt; when the fuse automatic temperature measurement system adopts the fixed-point measurement work mode, If the temperature difference of the measured melt temperature in the third time interval is less than the second temperature difference or the melt is blown, the automatic temperature measurement system for the fuse will automatically switch to the cycle type Measure how it works.

Preferably, the second time interval is shorter than the first time interval.

The two working modes of cyclic measurement and fixed-point measurement are automatically changed, and the appropriate measurement method can be selected according to the state of each melt, which is convenient for accurate measurement.

Description of drawings

Accompanying drawing 1 is the schematic diagram of the fuse automatic temperature measuring system of the present invention.

In the above drawings: 1. Fuse group; 11. Melt; 2. Test device; 3. Control device; 4. Track.

Detailed ways

The present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings.

Embodiment 1: Refer to the accompanying drawing 1.

An automatic temperature measurement system for fuses, which is used to automatically detect the temperature of each melt 11 in a fuse group 1 in a fuse life evaluation system, which includes a test device 2, a control device 3, set on the test device 2 or control Displacement sensor on device 3.

The test device 2 includes a temperature sensor and an action mechanism that drives the temperature sensor to move. The temperature sensor is a non-contact infrared thermal imaging temperature sensor. The action mechanism includes a stepping motor that is fixedly connected with the temperature sensor and signaled with the control device, and a track 4 matched with the stepping motor. The track 4 is arranged along the arrangement direction of the melts 11 . A displacement sensor is used to monitor the temperature sensor position.

The control device 3 is a program-controlled device, which is respectively connected with the temperature sensor, the action mechanism and the displacement sensor with wireless signals. The control device 3 collects and stores the temperature data of each melt 11 measured by the temperature sensor, and the control device 3 controls the movement of the action mechanism.

The fuse automatic temperature measurement system has two working modes: cycle measurement and fixed-point measurement. The control device 3 controls the fuse automatic temperature measurement system to switch between the two working modes according to the temperature state of the fuse group 1 . Under normal circumstances, the fuse automatic temperature measurement system is in the cyclic measurement mode. At this time, the control device 3 controls the stepper motor to move along the track 4, and the temperature sensor measures the temperature of each melt 11 one by one and the measured data Send it back to the control device 3 for storage. A measurement cycle is completed when the temperatures of all melts 11 have been measured. A first time interval, which can be set in the control device 3 , elapses between two adjacent measurement cycles. If the difference between two consecutive measured values of the temperature of a certain melt 11 is greater than the first temperature difference, the fuse automatic temperature measurement system automatically switches to a fixed-point measurement working mode. The value of the first temperature difference can be set in the control device 3 according to the actual situation, for example, it is set to 10°C.

When the fuse automatic temperature measurement system is in the fixed-point measurement mode, the temperature sensor continuously measures the temperature of a certain melt 11 and transmits the measured value to the control device 3 for storage. The second time passes between two adjacent measurements. interval. The second time interval can also be set in the control device 3, and usually the second time interval is shorter than the first time interval, for example, the test frequency is set to 1 time/second. At this time, if the difference between the temperature of the melt 11 measured by the temperature sensor within the third time interval is less than the second temperature difference or when the melt 11 is blown, the fuse automatic temperature measurement system will automatically switch to the cyclic measurement working mode . For example, if the third time interval is set to 5 seconds and the second temperature difference is set to 5°C, then if the temperature difference measured within 5 seconds is less than 5°C or the melt 11 is blown, the fuse automatic temperature measurement system will Automatically return to the cycle measurement work mode.

The above-mentioned embodiments are only to illustrate the technical concept and characteristics of the present invention, and the purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly, and not to limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention shall fall within the protection scope of the present invention.

Claims (9)

1. A fuse automatic temperature measurement system is used to automatically detect the temperature of each melt in the fuse group in the fuse life evaluation system, characterized in that: it includes A test device, the test device includes a temperature sensor, and an action mechanism that drives the temperature sensor to move; A control device, the control device is connected to the temperature sensor and the action mechanism respectively, and the control device collects and stores the temperature data of each of the melts measured by the temperature sensor , the control device controls the movement of the action mechanism. 2. The fuse automatic temperature measurement system according to claim 1, characterized in that: said temperature sensor is a non-contact temperature sensor. 3. The fuse automatic temperature measurement system according to claim 2, characterized in that: said temperature sensor is an infrared thermal imaging temperature sensor. 4. The fuse automatic temperature measurement system according to claim 1, characterized in that: the action mechanism includes a stepping motor that is fixedly connected to the temperature sensor and connected to the control device . A track matched with the stepping motor, and the track is arranged along the arrangement direction of the melts. 5 . The automatic fuse temperature measurement system according to claim 1 , further comprising a displacement sensor that is signal-connected to the control device and monitors the position of the temperature sensor. 6 . 6. The fuse automatic temperature measurement system according to any one of claims 1-5, characterized in that the control device is a program-controlled device. 7. The fuse automatic temperature measurement system according to claim 1, characterized in that: the fuse automatic temperature measurement system has two working modes: cycle measurement and fixed-point measurement, and the control device is based on the The temperature state of the fuse group controls the automatic temperature measurement system of the fuse to switch between the two working modes; When the automatic temperature measurement system of the fuse is in the cyclic measurement working mode, the action mechanism drives the temperature sensor to measure the temperature of each of the melts one by one and transmits the temperature measurement value to the The above-mentioned control device is stored, and a measurement cycle is completed, and the first time interval passes between two adjacent measurement cycles; When the fuse automatic temperature measurement system is in the fixed-point measurement working mode, the temperature sensor continuously measures the temperature of a certain melt and transmits the temperature measurement value to the control The device stores, and a second time interval elapses between two adjacent measurements. 8. The fuse automatic temperature measurement system according to claim 7, characterized in that: when the fuse automatic temperature measurement system adopts the cyclic measurement working mode, if a certain of the melt When the difference between two consecutive temperature measurements is greater than the first temperature difference, the automatic fuse temperature measurement system automatically switches to the fixed-point measurement mode and measures the temperature of the melt; when the When the fuse automatic temperature measurement system adopts the fixed-point measurement working mode, if the difference between the measured values of the melt temperature measured in the third time interval is less than the second temperature difference or the melt is blown, The automatic fuse temperature measurement system is automatically converted to the cyclic measurement working mode. 9. The automatic fuse temperature measuring system according to claim 7, wherein the second time interval is shorter than the first time interval.

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