GB2578370A

GB2578370A - Device for detecting service life of electronic component

Info

Publication number: GB2578370A
Application number: GB1913202.6A
Authority: GB
Inventors: Liu Hong; Yu Weijie; Li Haoqian; Fan Haiyang; Wang Yun; Li Ruitao; Xu Zhenying; Rao Peng; Tan Zhongrui; Li Fuzhu; Chen Shian; Zhang Chao
Original assignee: Jiangsu University
Current assignee: Jiangsu University
Priority date: 2018-05-10
Filing date: 2018-05-23
Publication date: 2020-05-06
Anticipated expiration: 2038-05-23
Also published as: WO2019213994A1; CN108872758A; GB2578370B; CN108872758B; GB201913202D0

Abstract

Disclosed is a device for detecting the service life of an electronic component (3), the device comprising a workbench (1), a detection module, a piezoelectric ceramic drive power source (8), an alternating-current power source module and a counting module. The detection module comprises a piezoelectric ceramic driver (2) and two identical detection circuits connected in parallel at two ends of the alternating-current power source module. The detection circuits are connected in series via the electronic component (3) and reset switches (9). The reset switches (9) are respectively located on two sides of a metal sheet (203) in the piezoelectric ceramic driver (2), the piezoelectric ceramic driver (2) is electrically connected to the piezoelectric ceramic drive power source (8), and the piezoelectric ceramic drive power source (8) generates an alternating electric field to make the metal sheet (203) produce vibration and deformation so that the reset switch (9) located on the side, generating vibration and deformation, of the metal sheet (203) is closed. The counting module is used to obtain the service life of the electronic component (3). The device can detect the service life of the electronic component (3) under different switch on/off frequencies and can also detect the service life of the component (3) in a frequent switch-on state.

Description

A DEVICE FOR MEASURING LIFETIME OF ELECTRONIC COMPONENTS

TECHNICAL FIELD

The present invention relates to the technical field of detection equipment, refers to a device for measuring lifetime of electronic components.

BACKGROUND ART

In recent years, with the rapid development of information industry and electronic technology, electronic components have played an irreplaceable role in today's life due to their high integration, high performance and miniaturization. The intelligent electronics industry has gradually replaced traditional high energy consumption products. In order to ensure the stability of electronic components, it is necessary to ensure that they have long lifetime and excellent performance. How to quickly detect and determine the lifetime of electronic components must be especially important for manufacturers. Manufacturers can improve the quality of products based on the test results of the lifetime of electronic components. However, the existing technology lacks the lifetime control and detection devices of electronic components, and the operators need to pay attention to the use of electronic components all the time, and can't simulate the actual lifetime of electronic components under frequent use.

SUMMARY OF THE INVENTION

In view of the shortcomings of the existing technologies, the invention presents a device for measuring lifetime of electronic components, which can simultaneously measure the lifetime of multiple electronic components.

The invention achieves the above technical objects by the following technical means.

The characteristics of a device for measuring lifetime of electronic components include the worktable, the detection module, the function generator, the alternating current power module and the counting module, wherein the detection module comprises the piezoelectric cantilever and two identical detection circuits which are connected in parallel to the alternating current power module.

The piezoelectric cantilever is mounted on the worktable, the piezoelectric cantilever is electrically connected to the function generator, and the function generator generates alternating electric field to cause the metal piece in the piezoelectric cantilever to vibrate and deform at different frequencies; The detection circuit is connected in series by electronic components and the reset switch, and two reset switches are respectively located on two sides of the metal piece, and the vibration deformation generated by the metal sheet can close the reset switch on the vibration side of the metal sheet.

The counting module is used to calculate the number of times between two adjacent breaking intervals of the two detection circuits within the allowable range of a set value or to calculate the number of on-off times of each detection circuit in order to obtain the lifetime of electronic components.

More specifically, wherein said counting module for calculating the number of times between two adjacent breaking intervals of the two detection circuits within the allowable range of a set value, includes the counter and the current detection device, each of detection circuit is provided with the current detection device, the current detection devices are connected in series in the detection circuit, and both the current detection devices are electrically connected to the counter in series.

More specifically, wherein said counting module for calculating the number of on-off times of each detection circuit comprises the photoelectric sensor, the control module, and the display, LED lamps as optical electronic components, each electronic component has a photoelectric sensor correspondingly, and the photoelectric sensors arc mounted on the baffle, and face the electronic components, the photoelectric sensors are electrically connected to the control module, and the control module is electrically connected to the display.

More specifically, wherein said the piezoelectric cantilever comprises the bearing support, the metal piece and the piezoelectric ceramic pieces symmetrically arranged on both sides of the metal piece, in addition the length of the piezoelectric ceramic pieces is less than the length of the metal piece, the piezoelectric ceramic pieces are closely attached to one end of the metal piece, which is fixed in the hearing support, the bearing support is fixed on the worktable.

More specifically, wherein said the reset switch includes the contact side, the toggle side, and the spring, one end of the spring is fixed, and the other end is connected to the toggle side of the switch so that the toggle side and the contact side are not in contact, the angle between the foot of the contact side and the horizontal plane is 0, so that the toggle side contacts the contact side before the metal piece reaches the maximum displacement.

More specifically, wherein said the number of the detection modules is multiple, and is arranged orderly on the worktable.

More specifically, wherein said the number of the detection modules is multiple, and is arranged orderly on the worktable, and the baffle is arranged between two detection modules, and the baffle is made of opaque materials.

More specifically, wherein said the alternating current power module includes alternating current power and the voltage regulator electrically connected to alternating current power.

BENEFICIAL EFFECTS OF THE PRESENT INVENTION

The invention is used to detect the lifetime of electronic components under different operation frequencies, as well as the lifetime of the components under the long opening state of the switch. The air convection generated by the operation of the piezoelectric cantilever can reduce the operating temperature of the electronic components.

In particular, the invention has the advantages of simple structure, easy to replace, and high recyc I ab I ity, and can simultaneously detect the lifetime of multiple electronic components.

Moreover, the invention uses the piezoelectric cantilever, which can accurately control the closing of the switch, and can reset the switch instantly through the spring; the piezoelectric cantilever has the characteristics of low energy consumption, high precision, compact structure, no electromagnetic interference and no heat, etc. And the driving frequency of the piezoelectric ceramic can be adjusted in real time via the function generator.

Furthermore, the invention displays the lifetime of the electronic components through the display, which is visible and practical, and can reduce the working intensity of the testers.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows the structural diagram 1 of a device for measuring lifetime of electronic components according to the present invention.

FIG. 2 shows the structural diagram 1 of the piezoelectric cantilever according to the present invention.

FIG. 3 shows the structural diagram 2 of the piezoelectric cantilever according to the present invention FIG. 4 shows the structural diagram of the reset switches according to the present invention.

FIG. 5 shows the structural diagram 2 of a device for measuring lifetime of electronic components according to the present invention.

FIG. 6 shows the structural diagram 3 of a device for measuring lifetime of electronic components according to the present invention.

FIG. 7 shows the structural diagram of installation of the LED lamps according to the present invention.

The reference numbers are as follows: 1-the worktable, 2-the piezoelectric cantilever, 201-the bearing support, 202-piezoelectiic ceramic piece, 203-the metal piece, 3-electronic components, 4-photoelectric sensor, 5-the control module, 6-display, 7-baffle, 8-the function generator, 9-the reset switch, 901-contact side, 902-toggle side, 10-spring, 11-screw, 12-the first wire, 13-the second wire, 14-the third wire, 15-connector, 16-the voltage regulator, 17-the current detection device, 18-the counter, 19-the fourth wire.

DETAILED METHODS OF THE INVENTION

The present invention is further described in conjunction with drawings and concrete embodiments, but the protection scope of the present invention is not limited to this.

Embodiment 1: As shown in FIG. 1, a device for measuring lifetime of electronic components according to the present invention includes the worktable 1, the detection module, the function generator 8, the alternating current power module and the counting module, wherein the detection module comprises the piezoelectric cantilever 2 and two identical detection circuits which are connected in parallel to the alternating current power module.

Specifically, the alternating current power module includes an alternating current power and the voltage regulator 16 that is electrically connected to the alternating current power, while the voltage regulator 16 stabilizes the output voltage of the alternating current power. As shown in FIG. 2 and FIG. 3, the piezoelectric cantilever 2 comprises the bearing support 201, the metal piece 203, and two piezoelectric ceramic pieces 202 that are symmetrically arranged on both sides of the metal piece 203, the bearing support 201 is fixed on the worktable 1 by a pair of screws 11, the length of the piezoelectric ceramic pieces 202 is less than the length of the metal piece 203, and the piezoelectric ceramic pieces 202 are closely attached on the metal piece 203 and arranged near one end of the metal piece 203, the first wires 12 are welded to the near ends of the two piezoelectric ceramic pieces 202 and the metal piece 203, both the metal piece 203 and the piezoelectric ceramic piece 202 are fixed in the pre-made groove of the bearing support 201, and the other end is suspending. On the fixed end of the metal piece 203, the metal piece 203 exceeds the piezoelectric ceramic piece 202 by 2-4 inm so that the first wires 12 can be welded on the metal piece 203, and the suspending end of the metal piece 203 exceeds the position of the reset switch 9 by 8 to 10 mm, so that the metal piece 203 can contact the switch 9 when it vibrates to the maximum displacement. And the function generator 8 can provide the alternating electric field with a certain frequency, which can be transmitted to the piezoelectric cantilever 2 through the first wires 12. The function generator 8 provides alternating electric field with a certain frequency, and the piezoelectric ceramic pieces 202 will also be deformed following the electric field frequency, and one end of the piezoelectric ceramic piece 202 is restrained. Under the alternating electric field, the piezoelectric ceramic piece 202 will vibrate slightly up and down, and the vibration is then amplified mechanically by the metal piece 203, which will generate larger amplitude of vibration, thus attain sufficient displacement to close the reset switch 9.

As shown in FIG. 1, the detection circuit comprises the electronic components 3, the reset switch 9, and the current detection device 17, and these three elements are connected in series via the second wire 13. The reset switches 9 of the two detection circuits are located on two sides of the metal piece 203. As shown in FIG. 4, the reset switch 9 includes the contact side 901, the toggle side 902 and the spring 10, one end of the spring 10 is fixed, and the other end is connected to the toggle side 902, and the angle between the foot of the contact side 901 and the horizontal plane is 0, and magnitude of the angle 0 should be at certain value to ensure that the toggle side 902 and the contact side 901 are brought into contact before the metal piece 203 reaches the maximum displacement, the counter 18 calculates the number of current interruptions in the detection circuit to obtain the lifetime of the electronic components 3.

As shown in FIG. 1, the counting module includes the counter 18 and the current detection device 17, each of detection circuit is provided with the current detection device 17, which is connected in series in the detection circuit, and the two current detection devices 17 are electrically connected to the counter 18 through the fourth wire 19.

When the metal piece 203 vibrates to the top, and the corresponding reset switch 9 on the upper side is closed, then the upper detection circuit is closed, and if the electronic component 3 on the upper side operates normally, the corresponding current detection device 17 can detect the current; When the metal piece 203 vibrates in the opposite direction, that is, vibrates to the bottom, the reset switch 9 on the upper side loses the pressure, and returns to the original position under the elastic force of the spring 10, and the detection circuit on the upper side is off, and the electronic component 3 on the upper side stops working, and the corresponding reset switch 9 on the lower side is closed under the pressure of the metal piece 203, so the detection circuit on the lower side is closed. If the electronic component 3 on the lower side works normally, the current detection device 17 on the lower side can detect the current signal. When the metal piece 203 vibrates to the top again, and turns on the detection circuit on the upper side, and the current detection device 17 on the upper side monitors the current again, If the circuit breaking time of the two near detection circuits is within the allowable range of a set value, it is determined that the detected electronic component 3 is working normally, and the value of the counter 18 is incremented by one, thus the lifetime of the electronic component 3 is obtained accumulatively. With the vibration of the metal sheet 203, the electronic components 3 on the upper and lower sides is turned on and off in turn until one of them is damaged and don't work normally. When the circuit breaking time of the two near detection circuits exceeds the allowable range of the set value, the detection circuit breaks by default, and the total normal operation times of the electronic component 3 can be read by the counter 18, which is the lifetime of the electronic component 3.

Embodiment 2: As shown in FIG. 5, taking electronic components 3 resistance as the example, multiple detection modules are arranged orderly on the worktable 1 of the above-described embodiment 1, and the lifetime of the multiple electronic components 3 can be simultaneously measured.

Embodiment 3: As shown in FIG. 6, in the embodiment 1, the electronic components 3 are LED lamps, and the counting module is replaced with the photoelectric sensor 4, the control module 5, and the display 6-As shown in FIG. 7, the LED lamps are screwed into the connectors 15 fixed on the worktable 1, the connectors 15 arc fixed on the worktable 1, each LED lamp corresponds to a photoelectric sensor 4, and the photoelectric sensors 4 are mounted on the baffle 7 and face the LED lamps. The multiple photoelectric sensors 4 are connected by the third wire 14, while the control module 5 is electrically connected with the third wire 14, and the control module 5 is electrically connected to the display 6 through the third wire 14. The photoelectric sensor 4 can detect the brightness of the electronic components 3, and then convert the optical signal into the electrical signal, and the control module 5 can process the received signal and send the processed signal to the display 6 through the third wire 14, the display 6 can count and display the signals. Multiple detection modules arc arranged orderly on the worktable 1, and the baffle 7 is fixed between each two detection modules, and is made of opaque materials.

When the metal piece 203 vibrates to the top, and the corresponding reset switch 9 on the upper side is closed, then the upper detection circuit is connected, and the upper LED lamp lights up normally. The corresponding photoelectric sensor 4 can detect the optical signal and convert into an electrical signal, and then the electrical signal can be processed by the control module 5, which is connected to the sensor 4 via the third wire 14. The processed signal then sent to the display 6, the display 6 can count and display the signal to realize the purpose of counting; when the metal piece 203 vibrates in the opposite direction, that is, vibrates to the bottom, the pressure on the reset switch 9 of the upper side is removed, and the reset switch 9 returns to the original position under the elastic force of the spring 10, thus the detection circuit on the upper side is off, and the LED lamp on the upper side is off, and the corresponding reset switch 9 on the lower side is closed under the pressure of the metal piece 203, while the detection circuit on the lower side is closed, the LED lamp on the lower side lights up normally, meanwhile the counting module counts. With the upper and lower vibration of the metal piece 203, the LED lamps on the upper and lower sides turn on and off in turn until a certain LED lamp can't light up, then the number of illuminating times the LED lamp can be read out through the display 6, that is the lifetime of the LED lamp. When the function generator 8 is on, the piezoelectric cantilevers 2 on both sides can work at the same time, so that the lifetime of the multiple electronic components 3 on the both sides can he detected at the same time, and the vibration frequency of piezoelectric cantilever 2 can be changed by adjusting the frequency of the alternating electric field, which is controllable and practical.

The embodiments arc preferred embodiments of the present invention, but the invention is not limited to the embodiments described above, and any obvious modifications, replacements or substitutions that can be made by those skilled in the art without departing from the substance of the invention are within the protection scope of the present invention.

Claims

What is claimed is: 1. A device for measuring lifetime of electronic components, comprising a worktable (1), a detection module, a function generator (8), an alternating current power module and a counting module, wherein the detection module comprises a piezoelectric cantilever (2) and two identical detection circuits which are connected in parallel to the alternating current power module; the piezoelectric cantilever (2) is mounted on the worktable (1), the piezoelectric cantilever (2) is electrically connected to the function generator (8), and the function generator (8) generates alternating electric field to cause the metal piece (203) in the piezoelectric cantilever (2) to vibrate and deform at different frequencies; the detection circuit is connected in series by electronic components (3) and the reset switch (9), and two reset switches (9) are respectively located on two sides of the metal piece (203), and the vibration deformation generated by the metal sheet (203) can close the reset switch (9) on the vibration side of the metal sheet (203); the counting module is used to calculate the number of times between two adjacent breaking intervals of the two detection circuits within the allowable range of a set value or to calculate the number of on-off times of each detection circuit in order to obtain the lifetime of electronic components (3).
2. The device for measuring lifetime of electronic components as set forth in claim 1, wherein the counting module for calculating the number of times between two adjacent breaking intervals of the two detection circuits within the allowable range of a set value, includes the counter (18) and the current detection device (17), each of detection circuit is provided with the current detection device (17), the current detection devices (17) are connected in series in the detection circuit, and both the current detection devices (17) are electrically connected to the counter (18) in series.
3. The device for measuring lifetime of electronic components as set forth in claim 1, wherein the counting module for calculating the number of on-off times of each detection circuit comprises a photoelectric sensor (4), a control module (5), and a display (6), LED lamps as optical electronic components (3), each electronic component (3) has a photoelectric sensor (4) correspondingly, and the photoelectric sensors (4) are mounted on the baffle (7), and face the electronic components (3), the photoelectric sensors (4) are electrically connected to the control module (5), and the control module (5) is electrically connected to the display (6).
4. The device for measuring lifetime of electronic components as set forth in any one of claims 1 to 3, wherein the piezoelectric cantilever (2) comprises a hearing support (201), the metal piece (203), and a piezoelectric ceramic pieces (202) symmetrically arranged on both sides of the metal piece (203), in addition the length of the piezoelectric ceramic pieces (202) is less than the length of the metal piece (203), the piezoelectric ceramic pieces (202) are closely attached to one end of the metal piece (203), which is fixed in the bearing support (201), the bearing support (201) is fixed on the worktable (1).
5. The device for measuring lifetime of electronic components as set forth in any one of claims 1 to 3, wherein the reset switch (9) includes a contact side (901), a toggle side (902), and a spring (10), one end of the spring (10) is fixed, and the other end is connected to the toggle side (902) of the switch so that the toggle side (902) and the contact side (901) are not in contact, the angle between the foot of the contact side (901) and the horizontal plane is 0, so that the toggle side (902) contacts the contact side (901) before the metal piece (203) reaches the maximum displacement.
6. The device for measuring lifetime of electronic components as set forth in any one of claims 1 to 2, wherein the number of the detection modules is multiple, and is arranged orderly on the worktable (1).
7. The device for measuring lifetime of electronic components as set forth in any one of claims 3, wherein the number of the detection modules is multiple, and is arranged orderly on the worktable (1), and the baffle (7) is arranged between two detection modules, and the baffle (7) is made of opaque material.
8. The device for measuring lifetime of electronic components as set forth in any one of claims 1 to 3, wherein the alternating current power module comprises alternating current power and the voltage regulator (16) electrically connected to alternating current power.