CN116430193A

CN116430193A - Detection assembly and detection method

Info

Publication number: CN116430193A
Application number: CN202310238327.1A
Authority: CN
Inventors: 蔡苗; 韦金秀; 贠明辉; 刘孟源; 罗银银; 肖经; 张玉婷
Original assignee: Guilin Yanchuang Semiconductor Technology Co ltd; Guilin University of Electronic Technology
Current assignee: Guilin Yanchuang Semiconductor Technology Co ltd; Guilin University of Electronic Technology
Priority date: 2023-03-14
Filing date: 2023-03-14
Publication date: 2023-07-14

Abstract

The invention provides a detection assembly and a detection method. The first installation component is arranged on the base; the bracket component is arranged on the base; the first sleeve is connected with the bracket component and can move relative to the bracket component; the second sleeve is connected with the first sleeve and can move relative to the first sleeve; the probe assembly is connected with the first sleeve; the pressure detection assembly comprises a pressure detection component and an elastic piece; one end of the elastic piece is connected with the second sleeve, and the other end of the elastic piece is connected with the first sleeve; under the condition of detecting the power device, the power device is arranged on the first installation component, and the pressure detection component can detect the first pressure value of the elastic piece so as to control the contact state of the probe component and the power device.

Description

Detection assembly and detection method

Technical Field

The invention relates to the technical field of test tools, in particular to a detection assembly and a detection method.

Background

At present, in the related art, when the power device is detected, a detection probe needs to be manually contacted with a detection terminal of the power device, but the manner that the detection probe is manually contacted with a test terminal is manually controlled, so that the pressure of each time the detection probe is contacted with the test terminal is difficult to ensure, and thus, errors occur in measurement.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

To this end, a first aspect of the invention proposes a detection assembly.

The second aspect of the present invention proposes a detection method.

In view of this, a first aspect of the present invention provides a detection assembly, coupled to a frequency sweep assembly, for detecting a power device, the detection assembly including a base, a first mounting assembly, a bracket assembly, a first sleeve, a second sleeve, a probe assembly, and a pressure detection assembly. The first installation component is arranged on the base; the bracket component is arranged on the base; the first sleeve is connected with the bracket component and can move relative to the bracket component; the second sleeve is connected with the first sleeve and can move relative to the first sleeve; the probe assembly is connected with the first sleeve; the pressure detection assembly comprises a pressure detection component and an elastic piece; one end of the elastic piece is connected with the second sleeve, and the other end of the elastic piece is connected with the first sleeve; under the condition of detecting the power device, the power device is arranged on the first installation component, and the pressure detection component can detect the first pressure value of the elastic piece so as to control the contact state of the probe component and the power device.

In the technical scheme, the detection component is connected with the sweep frequency component and is used for detecting the power device, so that the detection component can change the impedance of the power device under different frequencies, and the detection of the power device is realized. The detection assembly comprises a base, a first mounting assembly, a bracket assembly, a first sleeve, a second sleeve, a probe assembly and a pressure detection assembly. The first installation component is arranged on the base to install the first installation component, so that the first installation component can install the power device. The bracket component is arranged on the base to realize the installation and fixation of the bracket component. The first sleeve is connected with the bracket component and can move relative to the bracket component so as to realize the installation of the first sleeve, thereby the bracket component can adjust the position of the first sleeve. The probe assembly is coupled to the first sleeve to effect mounting of the probe assembly on the first sleeve. The second sleeve is connected with the first sleeve and can move relative to the first sleeve, and then when the second sleeve moves, the probe assembly can move along with the second sleeve, so that the second sleeve can control the movement of the probe assembly. The pressure detection assembly comprises a pressure detection component and an elastic piece; one end and the second sleeve of elastic component are connected, and the other end and the first sleeve of elastic component are connected for be connected through the elastic component between first sleeve and the second sleeve, and pressure detection part can detect the pressure of elastic component. Under the condition that the power device is detected, the power device is arranged on the first installation component, so that the probe terminal of the probe component is contacted with the testing terminal of the power device, then, the second sleeve is controlled to move relative to the first sleeve, after the elastic piece is compressed, the pressure detection component can detect the first pressure value of the elastic piece, after the pressure detection component detects the first pressure value each time, the probe terminal of the probe component can be determined to move to obtain a preset position, and then, the contact state of the probe component and the power device can be controlled, and the contact pressure of the probe terminal of the probe component and the power device can be guaranteed to be consistent, so that errors in each measurement can be avoided, and the accuracy in detecting the power device is improved.

In addition, the detection component in the technical scheme provided by the invention can also have the following additional technical characteristics:

in one technical scheme of the invention, the bottom wall of the first sleeve is provided with the mounting groove, the opening of the mounting groove faces the elastic piece, the mounting groove is recessed in the direction away from the first sleeve, and one end of the elastic piece is positioned in the mounting groove.

In this technical scheme, be provided with the mounting groove on the telescopic diapire of first, the opening of mounting groove is sunken towards keeping away from first telescopic direction towards the elastic component, and the one end of elastic component is located the mounting groove, and then makes the mounting groove install the elastic component to the mounting groove is fixed the one end of elastic component, makes the elastic component compress according to the direction of predetermineeing, in order to avoid the pressure detection part to the pressure detection error of elastic component to appear here.

In one aspect of the present invention, the bracket assembly includes a first support member, a support, a first rotating lever, a gear, a first mounting plate, a second mounting plate, a screw, and a slider. The first supporting component is arranged on the base; the support is connected with the first supporting part; the first rotating rod penetrates through the support; the gear is sleeved on the first rotating rod; one side of the first mounting plate is provided with a rack which is meshed with the gear; one end of the second mounting plate is connected with one side of the first mounting plate, which is away from the rack, and an included angle is formed between the second mounting plate and the first mounting plate; the screw rod is arranged on one side of the second mounting plate, which faces the base, and can rotate relative to the second mounting plate; one end of the sliding piece is connected with the first sleeve, and the other end of the sliding piece is matched with the screw rod and can move along the axial direction of the screw rod.

In this technical scheme, the support subassembly includes first supporting part, support, first dwang, gear, first mounting panel, second mounting panel, lead screw and slider. The first supporting component is arranged on the base to mount and fix the first supporting component, and the support is connected with the first supporting component to mount the support. The first rotating rod penetrates through the support, and the gear is sleeved on the first rotating rod, so that the first rotating rod can drive the gear to rotate when rotating relative to the support. One side of the first mounting plate is provided with a rack which is meshed with the gear so as to realize the mounting of the rack, and when the first rotating rod rotates, the first mounting plate can move along the axial direction of the first supporting part. One end of the second mounting plate is connected with one side of the first mounting plate, which is away from the rack, and an included angle is formed between the second mounting plate and the first mounting plate, so that the first mounting plate and the second mounting plate are L-shaped. The screw rod is arranged on one side, facing the base, of the second mounting plate, and can rotate relative to the second mounting plate, so that the screw rod is mounted. One end and the first telescopic link of slider, the other end and the lead screw cooperation of slider can follow the axial motion of lead screw, realizes the fore-and-aft adjustment of slider's horizontal position through the rotation of lead screw to can adjust the position of probe subassembly on the horizontal direction when making slider motion, can adjust the position of probe subassembly on the vertical direction when first rotating member moves, through setting up lead screw transmission structure, rack and pinion transmission structure, realize the vertical and the horizontal migration of slider, and then realize the quick location measurement of probe subassembly to the device that awaits measuring.

In one aspect of the invention, the second sleeve includes a barrel and a first positioning member. The cylinder body is positioned in the first sleeve; the first positioning component is positioned on one side of the cylinder body far away from the base and is connected with the probe assembly.

In this solution, the second sleeve comprises a cylinder and a first positioning member. The cylinder is positioned in the first sleeve so that the first sleeve is sleeved on the cylinder, and the cylinder can move relative to the first sleeve. The first positioning component is located on one side of the barrel away from the base and is connected with the probe assembly so as to mount the first positioning component, so that the first positioning component can fix and position the probe assembly, and the probe assembly can move along with the barrel.

In one aspect of the invention, the probe assembly is a ground probe and at least one detection probe. One side of the grounding probe, which is far away from the base, is arranged on the first positioning component; at least one detection probe is arranged on one side far away from the base and is arranged on the first positioning component in parallel with the grounding probe, and can be mutually far away from or close to the grounding probe.

In this embodiment, the probe assembly is a ground probe and at least one detection probe. One side of the grounding probe, which is far away from the base, is arranged on the first positioning component so as to realize the installation of the grounding probe; one side of at least one detection probe far away from the base is arranged on the first positioning component and is arranged in parallel with the grounding probe so as to realize the installation of the at least one detection probe, and the first positioning component can fix the installation position of the at least one detection probe. The at least one detection probe and the grounding probe can be far away from or close to each other, so that the first positioning component can adjust the distance between the at least one detection probe and the grounding probe, and the probe assembly can correspondingly adjust the distance between the probes according to the test terminals because the distances between the test terminals on different power devices are different, so that the power devices with different packaging structures, namely power devices with different intervals between the device terminals, can be adapted, and the requirement of testing the universality of the power devices is met.

In one technical scheme of the invention, the second sleeve further comprises a limiting column, the limiting column is positioned in the elastic piece, one end of the limiting column is connected with the bottom wall of the second sleeve, and the other end of the elastic piece can be in contact with the bottom wall of the first sleeve.

In this technical scheme, the second sleeve still includes spacing post, spacing post is located the elastic component, spacing post's one end is connected with the telescopic diapire of second, in order to realize the installation and fixed to spacing post, the other end of elastic component can with first telescopic diapire contact, thereby make spacing post can restrict the telescopic motion distance of second, play the effect of restriction elastic component compression distance, when the other end of elastic component can with first telescopic diapire contact, through detecting the pressure value of elastic component, thereby can guarantee that probe terminal and test terminal contact pressure keep the good ohmic contact test requirement of uniformity each time, in order to reduce measuring error.

The second aspect of the present invention provides a detection method, which uses the detection component in any one of the above technical solutions to detect a power device, where the detection method includes: according to the position of the power device, the detection part of the control probe assembly is opposite to the test terminal of the power device; the detection part of the control probe assembly is contacted with the test terminal of the power device; controlling the second sleeve to move relative to the first sleeve; controlling the contact state of the probe assembly and the power device according to the first pressure value; and controlling the probe assembly to detect the power device.

In the technical scheme, according to the position of the power device, the detection part of the probe assembly is controlled to be opposite to the test terminal of the power device, and then the probe assembly can be moved to a position close to the power device according to the position of the power device, so that the probe assembly can conveniently measure the power device. The detection part of the control probe assembly is contacted with the test terminal of the power device, the second sleeve is controlled to move relative to the first sleeve, so that the compression amount of the elastic piece is the same as the movement distance of the probe assembly relative to the power device after the second sleeve moves, and then whether the probe assembly moves to a position with the same pressure during each detection is determined by detecting the first pressure value of the elastic piece after the elastic piece is compressed, the contact state of the probe assembly and the power device is controlled according to the first pressure value, the probe assembly is controlled to move to the position with the same pressure relative to the power device, and then the probe assembly is controlled to detect the power device, so that errors during each measurement can be avoided, and the accuracy during the detection of the power device is improved.

In one aspect of the present invention, before controlling the movement of the second sleeve relative to the first sleeve, the detection method further includes: the control pressure detecting part detects an initial pressure value of the elastic member when the probe assembly is in contact with the test terminal of the power device.

In the technical scheme, before the second sleeve moves relative to the first sleeve, the pressure detection part is controlled to detect the initial pressure value of the elastic piece when the probe assembly is contacted with the test terminal of the power device, so that the spring is compressed before the second sleeve moves relative to the first sleeve, the accuracy of the pressure detection part in detecting the pressure value of the elastic piece after the second sleeve moves relative to the first sleeve can be further ensured, the probe terminal can be ensured to move to a position with consistent detection pressure each time, and the detection error is smaller.

In one technical scheme of the invention, if the first pressure value is equal to the first pressure threshold value, the probe assembly is controlled to detect the power device; and if the first pressure value is larger than or smaller than the first pressure threshold value, calibrating the initial pressure value of the elastic piece.

In the technical scheme, after the elastic piece is compressed, if the first pressure value is equal to the first pressure threshold value, the probe terminal of the probe assembly is moved to a position with consistent pressure, and the probe assembly is controlled to detect the power device. If the first pressure value is greater than or less than the first pressure threshold, the probe terminal of the probe assembly is not at the pressure-consistent position after the elastic member is compressed, and the initial pressure value of the elastic member needs to be calibrated at the moment, and the second sleeve is controlled to move relative to the first sleeve, so that the probe terminal of the probe assembly moves to the pressure-consistent position, and the probe terminal is at the pressure-consistent position when the power device is detected each time, so that measurement errors are reduced.

In one aspect of the present invention, according to a position of a power device, a detecting portion of a control probe assembly is opposite to a test terminal of the power device, including: acquiring the position of a power device; according to the position of the power device, the control sliding piece drives the probe assembly to move to the position of the power device; acquiring the position of a test terminal; the spacing between the ground probe and the at least one detection probe is adjusted according to the position of the test terminal.

In the technical scheme, the position of a power device is obtained; according to the position of the power device, the control sliding piece drives the probe assembly to move to the position of the power device, so that the probe assembly can move to the position close to the power device. The method comprises the steps of acquiring the position of a test terminal, adjusting the distance between a grounding probe and at least one detection probe according to the position of the test terminal, and detecting different power devices because the distances between the test terminals on different power devices are different, so that the probe assembly can correspondingly adjust the distance between the probes according to the test terminal.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 shows one of the structural schematic diagrams of a detection assembly according to one embodiment of the invention;

FIG. 2 illustrates a cross-sectional view of a detection assembly according to one embodiment of the invention;

FIG. 3 shows a schematic structural view of a base according to an embodiment of the present invention;

FIG. 4 shows a second schematic structural view of a detection assembly according to an embodiment of the present invention;

FIG. 5 illustrates a third schematic diagram of a detection assembly according to one embodiment of the present invention;

FIG. 6 shows a fourth schematic structural diagram of a detection assembly according to one embodiment of the invention;

FIG. 7 illustrates one of the structural schematic diagrams of a probe assembly according to one embodiment of the present invention;

FIG. 8 illustrates a second schematic structural view of a probe assembly according to one embodiment of the present invention;

FIG. 9 illustrates a third schematic structural view of a probe assembly according to one embodiment of the invention;

FIG. 10 illustrates a cross-sectional view of a probe assembly according to one embodiment of the invention;

FIG. 11 shows one of the flowcharts of the detection method according to one embodiment of the invention;

FIG. 12 shows a second flowchart of a detection method according to an embodiment of the invention;

FIG. 13 shows a third flowchart of a detection method according to an embodiment of the invention;

FIG. 14 shows a third flowchart of a detection method according to an embodiment of the invention.

The correspondence between the drawing marks and the part names in fig. 1 to 14 is:

the device comprises a 100 detection assembly, a 110 base, a 112 chute, a 114 base, a 116 boss, a 120 first installation assembly, a 122 first rotating shaft, a 124 second rotating shaft, a 126 first clamping member, a 128 second clamping member, a 130 bracket assembly, a 131 first clamping member, a 132 support, a 133 first rotating rod, a 134 gear, a 135 first installation plate, a 136 second installation plate, a 137 screw rod, a 138 rack, a 139 bearing seat, a 140 sliding member, a 150 first sleeve, a 152 installation groove, a 160 second sleeve, a 162 barrel, a 164 first positioning member, a 166 limit post, a 170 probe assembly, a 172 grounding probe, a 174 detection probe, a 176 first probe, a 178 second probe, a 180 pressure detection assembly, a 182 elastic member, a 184 pressure detection member, a 200 frequency sweeping assembly and a 700 power device.

Detailed Description

In order that the above-recited objects, features and advantages of the present invention will be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those described herein, and therefore the scope of the present invention is not limited to the specific embodiments disclosed below.

Referring now to fig. 1-14, a detection assembly 100 and detection method according to some embodiments of the present invention.

In view of this, as shown in fig. 1, 2 and 3, a first aspect of the present invention provides a detection assembly 100, where the detection assembly 100 is connected to a frequency sweep assembly 200 for detecting a power device 700, and the detection assembly 100 includes a base 110, a first mounting assembly 120, a bracket assembly 130, a first sleeve 150, a second sleeve 160, a probe assembly 170 and a pressure detection assembly 180. The first mounting assembly 120 is disposed on the base 110; the bracket assembly 130 is disposed on the base 110; the first sleeve 150 is coupled to the bracket assembly 130 and is movable relative to the bracket assembly 130; the second sleeve 160 is connected to the first sleeve 150 and is movable relative to the first sleeve 150; the probe assembly 170 is coupled to the first sleeve 150; the pressure detection assembly 180 includes a pressure detection member 184 and a resilient member 182; one end of the elastic member 182 is connected to the second sleeve 160, and the other end of the elastic member 182 is connected to the first sleeve 150; in the case of detecting the power device 700, the power device 700 is placed on the first mounting assembly 120, and the pressure detecting part 184 can detect the first pressure value of the elastic member 182 to control the contact state of the probe assembly 170 and the power device 700.

In this embodiment, the detection assembly 100 is connected with the frequency sweep assembly 200 through a cable, so as to detect the power device 700, so that the detection assembly 100 can change the impedance of the power device 700 at different frequencies, thereby realizing the detection of the power device 700. The sensing assembly 100 includes a base 110, a first mounting assembly 120, a bracket assembly 130, a first sleeve 150, a second sleeve 160, a probe assembly 170, and a pressure sensing assembly 180. The first mounting assembly 120 is disposed on the base 110, so as to mount the first mounting assembly 120, so that the first mounting assembly 120 can mount the power device 700. The bracket assembly 130 is disposed on the base 110 to enable the installation and fixation of the bracket assembly 130. The first sleeve 150 is coupled to the bracket assembly 130 and is movable relative to the bracket assembly 130 to effect mounting of the first sleeve 150 such that the bracket assembly 130 can adjust the position of the first sleeve 150. The probe assembly 170 is coupled to the first sleeve 150 to effect mounting of the probe assembly 170 on the first sleeve 150. The second sleeve 160 is coupled to the first sleeve 150 and is movable relative to the first sleeve 150 such that upon movement of the second sleeve 160, the probe assembly 170 moves with the second sleeve 160 such that the second sleeve 160 controls movement of the probe assembly 170. The pressure detection assembly 180 includes a pressure detection member 184 and a resilient member 182; one end of the elastic member 182 is connected with the second sleeve 160, the other end of the elastic member 182 is connected with the first sleeve 150, so that the first sleeve 150 is connected with the second sleeve 160 through the elastic member 182, and the pressure detecting part 184 can detect the pressure of the elastic member 182. In the case of detecting the power device 700, the power device 700 is placed on the first mounting assembly 120, so that the probe terminal of the probe assembly 170 is in contact with the test terminal of the power device 700, and then the second sleeve 160 is controlled to move relative to the first sleeve 150, after the elastic member 182 is compressed, the pressure detecting member 180 can detect the first pressure value of the elastic member 182, and after the pressure detecting member 184 detects the first pressure value each time, the probe terminal of the probe assembly 170 can be determined to move to obtain a predetermined position, and then the contact state of the probe assembly 170 and the power device 700 can be controlled, so that the contact pressure of the probe terminal of the probe assembly 170 and the power device 700 can be ensured to be consistent, and thus errors occurring during each measurement can be avoided, and the accuracy of the detection of the power device 700 can be improved.

Specifically, the pressure detecting member 184 is connected to the elastic member 182 by providing the pressure detecting member 184 such that the pressure detecting member 184 can detect the pressure value of the elastic member 182.

Specifically, the end of the second sleeve 160 remote from the elastic member 182 is provided with a handle, and the movement of the second sleeve 160 with respect to the first sleeve 150 can be controlled by pressing the handle.

Specifically, the pressure detecting component 184 is composed of a sensor, a signal detecting processing part and a display panel, so that when the elastic member 182 is compressed, the pressure value of the elastic member 182 can be directly known, and by detecting the stretching compression amount of the elastic member 182, the probe assembly 170 can be ensured to move to a position where the contact pressure is consistent with respect to the power device 700 each time.

Specifically, the base 110 includes two base bodies 114 and two bosses 116, the base bodies 114 are provided with sliding grooves 112, the sliding grooves 112 are recessed along a direction away from the probe assembly 170, and the two bosses 116 are respectively located at two sides of the sliding grooves 112 in the strict length direction and are connected with the base bodies 114. The first mounting assembly 120 includes a first rotating shaft 122, a second rotating shaft 124, a first clamping member 126 and a second clamping member 128, where the two bosses 116 are respectively provided with a through hole, the through hole is circular, threads are provided in the through hole, threads are also provided on the outer walls of the first rotating shaft 122 and the second rotating shaft 124, and can cooperate with the threads in the through hole, the first clamping member 126 and the second clamping member 128 are located between the two bosses 116, and the first rotating shaft 122 passes through the through hole on one boss 116 of the two bosses 116 and the first clamping member 126, so that the first clamping member 126 can move along the axial direction of the first rotating shaft 122 when the rotating shaft rotates; the second rotating shaft 124 passes through the through hole on the other boss 116 of the two bosses 116 and the second clamping member 128, so that the second clamping member 128 can move along the axial direction of the second rotating shaft 124 when the rotating shaft rotates; further, the first and second clamping members 126 and 128 can clamp or unclamp the power device 700 by rotating the first and second rotating shafts 122 and 124, and one sides of the first and second clamping members 126 and 128 are positioned in the chute 112 and can slide in the chute 112 along the length direction of the chute 112.

Specifically, the initial contact pressure of the probe and the test terminal in the probe assembly 170 is calibrated by the pressure detecting component 184, and the initial contact pressure is generally set to 0, that is, the probe of the probe assembly 170 just contacts the power device 700 at this time, and the contact pressure of the probe tip on the terminal is ensured to be consistent by further compressing the elastic component 182.

Specifically, the power semiconductor device is in long-term service in a severe working environment, and under the action of long-time electric-thermal-vibration impact, the device is easy to age, so that the reliability problem is caused, the normal operation of the device is influenced, and related researches show that: of the power system failures, about 38% result from failure of the power semiconductor devices. In view of the important role of the power device 700 in an electronic power system, the requirement of an on-line detection technology in the reliability research of the power device 700 becomes particularly important, the probe assembly 170 and the sweep assembly 200 system in the application are connected through threaded engagement, and the internal transmission line with the internal transmission line being 50 omega in the probe assembly 170 and the 50 omega cable of the sweep assembly 200 are connected through an SMA (shape memory alloy) interface in a pressing mode. The on-line frequency domain measurement of discrete devices with different terminal pitches of different packages can be realized by adjusting the probe pitch, the first installation component 120 holds a plurality of power devices 700 to be tested at one time, the detection component 100 in the application can realize batch rapid detection, the probe component 170 can directly realize interconnection with the signal port of the frequency sweep component 200 (such as a vector network analyzer or an impedance analyzer) through an SMA port with the probe component, and after interconnection with a frequency domain reflection instrument, the fixation, positioning and point touch measurement of the devices to be tested can be realized through the probe fine adjustment positioning structure, the device clamping structure to be tested and the limiting spring pressing structure of the device to be tested.

In addition, the problem that the traditional frequency domain measurement technology cannot realize the on-line measurement of the semiconductor power device 700 is solved by further compressing the elastic piece 182 to ensure that the contact pressure of the probe tip on the terminal keeps consistent, and the frequency domain measurement technology is successfully expanded to the field of on-line quality screening and on-line quality detection of the semiconductor power device 700. The on-line frequency domain measurement requirement of the semiconductor power device 700 in various packaging forms is met, the complex operation procedures that an external impedance matching clamp needs to be integrated in the traditional frequency domain measurement and the measuring clamp needs to be connected with the device to be measured in a welding mode are avoided, and the frequency domain measurement difficulty, time and cost are greatly reduced.

The present embodiment provides a detection assembly 100, which further includes the following technical features in addition to the technical features of the above embodiment.

As shown in fig. 2, the bottom wall of the first sleeve 150 is provided with a mounting groove 152, the opening of the mounting groove 152 faces the elastic member 182, the mounting groove 152 is recessed in a direction away from the first sleeve 150, and one end of the elastic member 182 is located in the mounting groove 152.

In this embodiment, the bottom wall of the first sleeve 150 is provided with the mounting groove 152, the opening of the mounting groove 152 faces the elastic member 182, the mounting groove 152 is recessed in a direction away from the first sleeve 150, one end of the elastic member 182 is located in the mounting groove 152, so that the mounting groove 152 can mount the elastic member 182, so that the mounting groove 152 can fix one end of the elastic member 182, the elastic member 182 can be compressed in a preset direction, and thus errors in pressure detection of the elastic member 182 by the pressure detecting component 184 can be avoided.

Specifically, the elastic member 182 is a spring, the opening of the mounting groove 152 is circular, and the circular groove can fix one end of the elastic member 182.

As shown in fig. 1, 4 and 5, the bracket assembly 130 includes a first support member 131, a bracket 132, a first rotating lever 133, a gear 134, a first mounting plate 135, a second mounting plate 136, a screw 137 and a slider 140. The first supporting member 131 is disposed on the base 110; the support 132 is connected to the first support member 131; the first rotating rod 133 penetrates through the support 132; the gear 134 is sleeved on the first rotating rod 133; a rack 138 is provided on one side of the first mounting plate 135, and the rack 138 is engaged with the gear 134; one end of the second mounting plate 136 is connected with one side of the first mounting plate 135 away from the rack 138 and has an included angle with the first mounting plate 135; the screw 137 is mounted on a side of the second mounting plate 136 facing the base 110, and is rotatable with respect to the second mounting plate 136; one end of the slider 140 is connected to the first sleeve 150, and the other end of the slider 140 is engaged with the screw 137 so as to be movable in the axial direction of the screw 137.

In this embodiment, the bracket assembly 130 includes a first support member 131, a bracket 132, a first rotating lever 133, a gear 134, a first mounting plate 135, a second mounting plate 136, a screw 137, and a slider 140. The first supporting member 131 is disposed on the base 110 to mount and fix the first supporting member 131, and the support 132 is connected to the first supporting member 131 to mount the support 132. The first rotating rod 133 is disposed through the support 132, and the gear 134 is sleeved on the first rotating rod 133, so that the first rotating rod 133 can drive the gear 134 to rotate when the first rotating rod 133 rotates relative to the support 132. A rack 138 is provided at one side of the first mounting plate 135, and the rack 138 is engaged with the gear 134 to mount the rack 138, and the first mounting plate 135 is movable in the axial direction of the first supporting member 131 when the first rotating lever 133 is rotated. One end of the second mounting plate 136 is connected to a side of the first mounting plate 135 facing away from the rack 138, and has an included angle with the first mounting plate 135, so that the first mounting plate 135 and the second mounting plate 136 are L-shaped. The screw 137 is mounted on a side of the second mounting plate 136 facing the base 110, and is rotatable relative to the second mounting plate 136 to mount the screw 137. One end of the sliding piece 140 is connected with the first sleeve 150, the other end of the sliding piece 140 is matched with the screw rod 137, the sliding piece 140 can move along the axial direction of the screw rod 137, the horizontal position of the sliding piece 140 can be adjusted back and forth through the rotation of the screw rod 137, the position of the probe assembly 170 in the horizontal direction can be adjusted when the sliding piece 140 moves, the position of the probe assembly 170 in the vertical direction can be adjusted when the first rotating piece moves, the vertical and horizontal movement of the sliding piece 140 can be realized through the transmission structure of the screw rod 137 and the transmission structure of the rack 138 of the gear 134, and then the quick positioning measurement of the probe assembly 170 to-be-measured devices can be realized.

Specifically, the first supporting member 131 is a rectangular vertical rod.

Specifically, the number of the supporting seats 132 is two, the two supporting seats 132 are fixedly mounted on the first supporting member 131, a gap is formed between the two supporting seats 132, the first rotating rod 133 penetrates through the two supporting seats 132, the gear 134 is located in the gap, and the supporting seats 132 are connected with the first supporting member 131 through screws, so that the supporting seats 132 are fixed.

Specifically, the bracket assembly 130 further includes a rack 138 seat, the rack 138 seat is connected to a side of the first mounting plate 135 facing the gear 134, and the rack 138 is connected to the rack 138 seat, so that the rack 138 seat can mount and fix the rack 138.

Specifically, the bracket assembly 130 further includes two bearing seats 139, the two bearing seats 139 are connected to one side of the second mounting plate 136 facing the base 110, and the screw rod 137 is penetrated through the two bearing seats 139, so as to mount the screw rod 137, so that the sliding member 140 can move along the axial direction of the screw rod 137 when the screw rod 137 rotates, thereby realizing the adjustment of the probe assembly 170 in the horizontal direction.

Specifically, by setting the bracket assembly 130 and the first mounting assembly 120, the movement distance of the detection probe can be controlled and finely adjusted, and the first mounting assembly 120 can tighten the device 700 to be tested, so as to eliminate the test error caused by the tiny vibration displacement of the device in the test process. The screw rod 137 is used for fine adjustment of the horizontal position of the probe assembly 170, and the first rotating rod 133 is used for fine adjustment of the vertical distance of the probe module when rotating. The whole device adopts integrated structural design, and fine adjustment positioning of the position is carried out on the probe assembly 170 through a mechanical transmission structure, so that the test result obtained in a test mode of directly contacting the test terminal with the handheld probe is more stable.

As shown in fig. 6 and 7, the second sleeve 160 includes a cylinder 162 and a first positioning member 164. Barrel 162 is positioned within first sleeve 150; the first positioning member 164 is located on a side of the barrel 162 remote from the base 110 and is coupled to the probe assembly 170.

In this embodiment, the second sleeve 160 includes a barrel 162 and a first positioning member 164. Barrel 162 is positioned within first sleeve 150 such that first sleeve 150 is nested within barrel 162 such that barrel 162 is movable relative to first sleeve 150. The first positioning member 164 is located at a side of the barrel 162 remote from the base 110 and is coupled to the probe assembly 170 to enable mounting of the first positioning member 164 such that the first positioning member 164 can fix and position the probe assembly 170 so that the probe assembly 170 can move with the barrel 162.

As shown in fig. 7, 8, 9 and 10, the probe assembly 170 is grounded to the probe 172 and at least one detection probe 174. The side of the ground probe 172 away from the base 110 is disposed on the first positioning member 164; at least one detection probe 174 is provided on the side away from the base 110 in the first positioning member 164, and is juxtaposed with the ground probe 172 so as to be capable of being moved away from or closer to the ground probe 172.

In this embodiment, the probe assembly 170 is grounded to the probe 172 and at least one detection probe 174. The side of the ground probe 172 away from the base 110 is disposed on the first positioning member 164 to mount the ground probe 172; one side of the at least one detection probe 174 away from the base 110 is disposed on the first positioning member 164 and juxtaposed with the ground probe 172 to enable the at least one detection probe 174 to be mounted, such that the first positioning member 164 can fix the mounting position of the at least one detection probe 174. The at least one detection probe 174 can be far away from or close to the ground probe 172, so that the first positioning component 164 can adjust the distance between the at least one detection probe 174 and the ground probe 172, and as the distances between the test terminals on different power devices 700 are different, the probe assembly 170 can correspondingly adjust the distance between the probes according to the test terminals, so as to adapt to the power devices 700 with different packaging structures, namely the power devices 700 with different intervals between the device terminals, and realize the requirement of the universality test of the power devices 700.

Specifically, the first positioning component 164 includes a first guide rail, a second guide rail, a third guide rail, and a fourth guide rail, where the first guide rail, the second guide rail, the third guide rail, and the fourth guide rail are arranged in parallel, a first gap is provided between the first guide rail and the second guide rail, a second gap is provided between the second guide rail and the third guide rail, a third gap is provided between the third guide rail and the fourth guide rail, the ground probe 172 and the at least one detection probe 174 are located in the second gap, and the ground probe 172 and the at least one detection probe 174 can move relative to the length directions of the second guide rail and the third guide rail, so that the distance between the ground probe 172 and the at least one detection probe 174 can be adjusted, so that the power device 700 with different test terminals can be detected, for example: to-247, to-220, to-92, etc.

Specifically, one end of the ground probe 172 has a first mounting portion, such that the ground probe 172 is in a cross shape, one end of the first mounting portion is located on the first rail and the second rail, and can slide relative to the first rail and the second rail, the other end of the first mounting portion is located on the third rail and the fourth rail, and can slide relative to the third rail and the fourth rail, and when the ground probe 172 is fixed, the ground probe 172 is threaded through the one end of the first mounting portion from the position of the first gap by using a first bolt, and is connected with the first bolt by using a first nut, and the ground probe 172 is threaded through the other end of the first mounting portion from the position of the third gap by using a second bolt, and is connected with the second bolt by using a second nut, and the ground probe 172 is horizontally slid and fixed on the rails by connecting the structure of the bolt and the nut in a cross structure.

Specifically, one end of the at least one detection probe 174 has a second mounting portion, so that the at least one detection probe 174 is in a cross shape, one end of the second mounting portion is located on the first guide rail and the second guide rail, and can slide relative to the first guide rail and the second guide rail, the other end of the second mounting portion is located on the third guide rail and the fourth guide rail, and can slide relative to the third guide rail and the fourth guide rail, and when the at least one detection probe 174 is fixed, the third bolt penetrates through one end of the second mounting portion from the position of the first gap, and is connected with the third bolt through the third nut, and the fourth bolt penetrates through the other end of the second mounting portion from the position of the third gap, and is connected with the fourth bolt through the fourth nut, and the at least one detection probe 174 is in a cross structure and is connected with the guide rail through the structure of the bolts and the nuts, so that the horizontal sliding on the guide rail can be realized, so that the adjustable fixing of the horizontal distance can be realized.

Specifically, the probe assembly 170 may determine the number of probes within the device as desired, and the at least one detection probe 174 includes a first probe 176 and a second probe 178, such that the probe assembly 170 includes three probes, namely, a ground probe 172, the first probe 176, and the second probe 178. The three probe tails of the ground probe 172, the first probe 176 and the second probe 178 are designed as SMA structures for direct interconnection with the input and output ports of the sweep assembly 200, the tips of the ground probe 172, the first probe 176 and the second probe 178 and the test terminals of the power device 700 are interconnected by ohmic contacts, and the tips of the ground probe 172, the first probe 176 and the second probe 178 are rigid and non-stretchable by manually applying pressure when the tips of the ground probe 172, the first probe 176 and the second probe 178 are connected with the test terminals.

Specifically, through holes are provided at both ends of the first and second mounting portions, so that the ground probe 172 and the at least one sensing probe 174 are easily loosened and locked by means of the structure of the bolts and nuts.

The three probe tails of the ground probe 172, the first probe 176, and the second probe 178 are designed as a threaded structure to enable interconnection of the probe assembly 170 and the sweep assembly 200 (e.g., vector network analyzer or impedance analyzer) port1 (input port) and port2 (output port), the first probe 176 and the second probe 178 being designed according to a conventional characteristic impedance of 50Ω (consisting of 50Ω internal traces, insulation layers, and metal housing). The ground probe 172 is grounded to the frequency sweep assembly 200 through the first positioning member 164.

As shown in fig. 2, the second sleeve 160 further includes a limiting post 166, the limiting post 166 is located in an elastic member 182, one end of the limiting post 166 is connected with the bottom wall of the second sleeve 160, and the other end of the elastic member 182 can contact with the bottom wall of the first sleeve 150.

In this embodiment, the second sleeve 160 further includes a limiting post 166, the limiting post 166 is located in the elastic member 182, one end of the limiting post 166 is connected with the bottom wall of the second sleeve 160, so as to mount and fix the limiting post 166, and the other end of the elastic member 182 can contact with the bottom wall of the first sleeve 150, so that the limiting post 166 can limit the movement distance of the second sleeve 160, and plays a role in limiting the compression distance of the elastic member 182, when the other end of the elastic member 182 can contact with the bottom wall of the first sleeve 150, by detecting the pressure value of the elastic member 182, the ohmic contact test requirement that the consistency of the contact pressure of the probe terminal and the test terminal is good can be ensured each time, so as to reduce the measurement error.

The elastic member 182 is sleeved on the limiting post 166 of the elastic member 182, so that the compression amount of the elastic member 182 is limited, and the pressure is kept at a fixed value each time. The elastic member 182 is connected to a pressure detecting unit 184, and the pressure detecting unit 184 is used for calibrating the initial contact pressure of the probe before the probe is pushed down, and can monitor the time pushing down pressure value, so as to ensure that the pressure of the probe is kept at a fixed pressure value every time. Therefore, the consistency of ohmic contact stress between the probe and the device terminal can be ensured, and the error value of the test result is reduced.

The second aspect of the present invention provides a detection method for detecting a power device by using the detection component in any of the foregoing embodiments, as shown in fig. 11, where the detection method includes:

s302, controlling a detection part of the probe assembly to be opposite to a test terminal of the power device according to the position of the power device;

s304, a detection part of the control probe assembly is contacted with a test terminal of the power device;

s306, controlling the second sleeve to move relative to the first sleeve;

s308, controlling the contact state of the probe assembly and the power device according to the first pressure value;

s310, controlling the probe assembly to detect the power device.

In this embodiment, according to the position of the power device, the detection portion of the probe assembly is controlled to be opposite to the test terminal of the power device, so that the probe assembly can be moved to a position close to the power device according to the position of the power device, so that the probe assembly can measure the power device conveniently. The detection part of the control probe assembly is contacted with the test terminal of the power device, the second sleeve is controlled to move relative to the first sleeve, so that the compression amount of the elastic piece is the same as the movement distance of the probe assembly relative to the power device after the second sleeve moves, and then whether the probe assembly moves to a position with the same pressure during each detection is determined by detecting the first pressure value of the elastic piece after the elastic piece is compressed, the contact state of the probe assembly and the power device is controlled according to the first pressure value, the probe assembly is controlled to move to the position with the same pressure relative to the power device, and then the probe assembly is controlled to detect the power device, so that errors during each measurement can be avoided, and the accuracy during the detection of the power device is improved.

Specifically, before the detection part of the control probe assembly is opposite to the test terminal of the power device according to the position of the power device, the detection method further comprises: the control probe assembly is connected with the sweep frequency assembly; controlling the sweep frequency assembly to calibrate the probe assembly; the first mounting assembly is controlled to clamp the power device. Be connected with the sweep frequency subassembly through the probe subassembly for the sweep frequency subassembly calibrates the probe subassembly, thereby can reduce the error of probe subassembly when detecting, thereby promotes the accuracy that detects. The power device is clamped through the first mounting assembly, so that the power device can be fixed, and stability in detection is guaranteed.

The embodiment provides a detection method, as shown in fig. 12, where the detection method further includes:

s402, controlling a detection part of the probe assembly to be opposite to a test terminal of the power device according to the position of the power device;

s404, a detection part of the control probe assembly is contacted with a test terminal of the power device;

s406, controlling the pressure detection component to detect an initial pressure value of the elastic piece when the probe assembly is contacted with a test terminal of the power device;

s408, controlling the second sleeve to move relative to the first sleeve;

S410, controlling the contact state of the probe assembly and the power device according to the first pressure value;

and S412, controlling the probe assembly to detect the power device.

In this embodiment, before the second sleeve moves relative to the first sleeve, the pressure detecting component is controlled to detect an initial pressure value of the elastic piece when the probe assembly is in contact with the test terminal of the power device, so that the spring can be prevented from being compressed before the second sleeve moves relative to the first sleeve, the accuracy of detecting the pressure value of the elastic piece by the pressure detecting component after the second sleeve moves relative to the first sleeve can be further guaranteed, the probe terminal can be guaranteed to move to a position where the detected pressure is consistent each time, the detected error is reduced, and the initial pressure value when the probe assembly is in contact with the test terminal can be calibrated by utilizing the pressure detecting component.

In one embodiment of the invention, if the first pressure value is equal to the first pressure threshold value, the probe assembly is controlled to detect the power device; and if the first pressure value is larger than or smaller than the first pressure threshold value, calibrating the initial pressure value of the elastic piece.

In this embodiment, after the elastic member is compressed, if the first pressure value is equal to the first pressure threshold value, the probe terminal of the probe assembly has moved to a position where the pressures are consistent, and the probe assembly is controlled to detect the power device. If the first pressure value is greater than or less than the first pressure threshold, the probe terminal of the probe assembly is not at the pressure-consistent position after the elastic member is compressed, and the initial pressure value of the elastic member needs to be calibrated at the moment, and the second sleeve is controlled to move relative to the first sleeve, so that the probe terminal of the probe assembly moves to the pressure-consistent position, and the probe terminal is at the pressure-consistent position when the power device is detected each time, so that measurement errors are reduced.

The embodiment provides a detection method, as shown in fig. 13, where the detection method further includes:

s502, acquiring the position of a power device;

s504, controlling the sliding piece to drive the probe assembly to move to the position of the power device according to the position of the power device;

s506, acquiring the position of a test terminal;

s508, adjusting the interval between the grounding probe and at least one detection probe according to the position of the test terminal;

s510, controlling a detection part of the probe assembly to be in contact with a test terminal of the power device;

s512, controlling the second sleeve to move relative to the first sleeve;

s514, controlling the contact state of the probe assembly and the power device according to the first pressure value;

s516, controlling the probe assembly to detect the power device.

In this embodiment, the position of the power device is acquired; according to the position of the power device, the control sliding piece drives the probe assembly to move to the position of the power device, so that the probe assembly can move to the position close to the power device. The method comprises the steps of acquiring the position of a test terminal, adjusting the distance between a grounding probe and at least one detection probe according to the position of the test terminal, and detecting different power devices because the distances between the test terminals on different power devices are different, so that the probe assembly can correspondingly adjust the distance between the probes according to the test terminal.

The embodiment provides a detection method, as shown in fig. 14, where the detection method further includes:

s602, connecting a control probe assembly with a sweep frequency assembly;

s604, controlling the sweep frequency assembly to calibrate the probe assembly;

s606, controlling the first mounting assembly to clamp the power device;

s608, controlling the detection part of the probe assembly to be opposite to the test terminal of the power device according to the position of the power device;

s610, controlling a detection part of the probe assembly to be in contact with a test terminal of the power device;

s612, controlling the pressure detection component to calibrate an initial pressure value of the elastic piece when the probe assembly is contacted with a test terminal of the power device;

s614, controlling the second sleeve to move relative to the first sleeve;

s616, judging whether the display value of the pressure detection component is a fixed value, if so, executing S618, and if not, executing S610;

s618, controlling the probe assembly to detect the power device;

s620, obtaining a detection result of the sweep frequency component on the power device.

In this embodiment, during the detection process, the handle of the second sleeve is pressed, so that the second sleeve can move relative to the first sleeve, after the second sleeve moves, whether the display value of the elastic member detected by the pressure detection component is a fixed value is judged, if the display value is the fixed value, the probe assembly is indicated to move to a position with consistent pressure relative to the power device, and then the power device can be detected. If the display value is not a fixed value, the probe assembly does not move to a position with consistent pressure relative to the power device, and at the moment, the detection part of the probe assembly is required to be controlled to be contacted with the test terminal of the power device again so as to calibrate the initial pressure value of the elastic piece when the probe assembly is contacted with the test terminal of the power device, thereby ensuring that the probe assembly is positioned with consistent pressure during each detection.

In the claims, specification and drawings of the present invention, the term "plurality" means two or more, unless explicitly defined otherwise, the orientation or positional relationship indicated by the terms "upper", "lower", etc. are based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the present invention and making the description process easier, and not for the purpose of indicating or implying that the device or element in question must have the particular orientation described, be constructed and operated in the particular orientation, and therefore such description should not be construed as limiting the present invention; the terms "connected," "mounted," "secured," and the like are to be construed broadly, and may be, for example, a fixed connection between a plurality of objects, a removable connection between a plurality of objects, or an integral connection; the objects may be directly connected to each other or indirectly connected to each other through an intermediate medium. The specific meaning of the terms in the present invention can be understood in detail from the above data by those of ordinary skill in the art.

In the claims, specification, and drawings of the present invention, the descriptions of terms "one embodiment," "some embodiments," "particular embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In the claims, specification and drawings of the present invention, the schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a detection subassembly, its characterized in that, detection subassembly is connected with the frequency sweep subassembly for detect power device, detection subassembly includes:

a base;

the first installation component is arranged on the base;

the bracket component is arranged on the base;

a first sleeve coupled to the bracket assembly, the first sleeve being movable relative to the bracket assembly;

a second sleeve coupled to the first sleeve, the second sleeve being movable relative to the first sleeve;

a probe assembly connected to the first sleeve;

a pressure detection assembly including a pressure detection member and an elastic member;

one end of the elastic piece is connected with the second sleeve, and the other end of the elastic piece is connected with the first sleeve;

Under the condition of detecting the power device, the power device is arranged on the first installation component, and the pressure detection component can detect a first pressure value of the elastic piece so as to control the contact state of the probe component and the power device.

2. The detection assembly of claim 1, wherein,

the mounting groove is formed in the bottom wall of the first sleeve, the opening of the mounting groove faces the elastic piece, the mounting groove is recessed away from the direction of the first sleeve, and one end of the elastic piece is located in the mounting groove.

3. The detection assembly of claim 1, wherein the bracket assembly comprises:

a first support member provided to the base;

a support connected to the first support member;

the first rotating rod penetrates through the support;

the gear is sleeved on the first rotating rod;

the first mounting plate is provided with a rack on one side, and the rack is meshed with the gear;

one end of the second mounting plate is connected with one side of the first mounting plate, which is away from the rack, and an included angle is formed between the second mounting plate and the first mounting plate;

The screw rod is arranged on one side, facing the base, of the second mounting plate and can rotate relative to the second mounting plate;

and one end of the sliding piece is connected with the first sleeve, and the other end of the sliding piece is matched with the screw rod and can move along the axial direction of the screw rod.

4. The sensing assembly of claim 1, wherein the second sleeve comprises:

a barrel positioned within the first sleeve;

and the first positioning component is positioned on one side of the cylinder body away from the base and is connected with the probe assembly.

5. The detection assembly of claim 4, wherein the probe assembly:

a ground probe, wherein one side of the ground probe far away from the base is arranged on the first positioning component;

at least one detection probe, at least one detection probe keep away from the base one side set up in first locating part, and with ground probe juxtapose sets up, can with ground probe keep away from each other or be close to.

6. The detection assembly of any one of claims 1 to 5, wherein the second sleeve further comprises:

The limiting column is positioned in the elastic piece, one end of the limiting column is connected with the bottom wall of the second sleeve, and the other end of the elastic piece can be in contact with the bottom wall of the first sleeve.

7. A method of testing a power device using the test assembly of any one of claims 1 to 6, the method comprising:

controlling the detection part of the probe assembly to be opposite to the test terminal of the power device according to the position of the power device;

controlling the detection part of the probe assembly to be in contact with the test terminal of the power device;

controlling movement of the second sleeve relative to the first sleeve;

controlling the contact state of the probe assembly and the power device according to the first pressure value;

and controlling the probe assembly to detect the power device.

8. The method of detecting of claim 7, wherein prior to controlling the movement of the second sleeve relative to the first sleeve, the method further comprises:

and controlling the pressure detection component to detect an initial pressure value of the elastic piece when the probe assembly is contacted with the test terminal of the power device.

9. The method according to claim 8, wherein,

if the first pressure value is equal to a first pressure threshold value, controlling the probe assembly to detect the power device;

and calibrating the initial pressure value of the elastic piece if the first pressure value is larger than or smaller than the first pressure threshold value.

10. The detection method according to any one of claims 7 to 9, characterized in that controlling the detection portion of the probe assembly to be opposed to the test terminal of the power device according to the position of the power device includes:

acquiring the position of the power device;

according to the position of the power device, the sliding piece is controlled to drive the probe assembly to move to the position of the power device;

acquiring the position of the test terminal;

and adjusting the distance between the grounding probe and at least one detection probe according to the position of the test terminal.