CN208384010U - Power amplifier board test fixture - Google Patents
Power amplifier board test fixture Download PDFInfo
- Publication number
- CN208384010U CN208384010U CN201820950156.XU CN201820950156U CN208384010U CN 208384010 U CN208384010 U CN 208384010U CN 201820950156 U CN201820950156 U CN 201820950156U CN 208384010 U CN208384010 U CN 208384010U
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- power amplifier
- amplifier board
- measured
- test
- test fixture
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Abstract
The utility model provides a kind of power amplifier board test fixture, power amplifier board test fixture includes boxed basement and the removable proae mounting plate assigned in boxed basement upper end, multiple upper ends are installed in the proae mounting plate for corresponding the test probe connected with the test point of power amplifier board to be measured, the boxed basement, which is equipped with, protrudes into the perforation in boxed basement inner cavity for each lower end for testing probe, it is equipped in the inner cavity of the boxed basement and supplies the power supply detection structure for being electrically connected and measuring power amplifier board test point voltage to be measured with test probe, power amplifier board test fixture further includes for pressing downwards power amplifier board to be measured in the pressing structure of each test probe pin upper ends.A possibility that detection structure of powering is arranged in the inside of boxed basement, reduces operator's contact wire, improves the safety of test process.The removable outside for being arranged in boxed basement of proae mounting plate, whole exposed without conducting wire, use is safer.
Description
Technical field
The utility model relates to a kind of printed circuit boards half-finished product plate test fixture, in particular to a kind of power amplifier board tests work
Dress.
Background technique
Pitch-controlled system is one of three big electrical systems of safe operation of wind turbine, according to wind power generating set local environment
Wind behaviour, change the propeller pitch angle of blade, achieve the purpose that regulation power and protection blower.Variable pitch driver is pitch-controlled system
Core component and execute structure, variable pitch driver control pitch motor achieve the purpose that adjust fan blade angle.
The power amplifier board of variable pitch driver is used for the position command signal of master control system, after certain algorithm process,
Transform into the voltage signal of driving pitch motor rotation.
In variable pitch driver production process, test is carried out to the power amplifier board of variable pitch driver and is very important work.
The factory failure rate that board and driver can be reduced to the test of power amplifier board is the important hand for improving drive products quality
Section.
In the traditional test process of power amplifier board, usually directly tested on circuit board between two measurement points with multimeter
Whether voltage signal, evaluation power amplifier board are qualified, it usually needs test plurality of voltages signal needs a professional to connect
Line is tested and work of taking out stitches, and test process is complicated, and the testing time is long, and the length of testing speech for completing one piece of power amplifier board after actual measurement is about
10 minutes, and one piece of power amplifier board of every test will rewiring, it is time-consuming and laborious, and test can only single channel carry out, be not easy multichannel
It tests simultaneously, this test method the shortcomings that there are test job low efficiencys；Simultaneously because human factor, wiring process goes out unavoidably
Mistake, the wiring that only causes if discovery in time before power on to take out stitches are done over again, otherwise, the case where will result in power amplifier board damage, risk
It is larger.
Utility model content
The purpose of this utility model is to provide a kind of power amplifier board test fixtures, to solve to use multimeter in the prior art
The technical problem that power amplifier board is tested and causes detection efficiency lower.
To achieve the above object, the technical solution of the utility model power amplifier board test fixture is: a kind of power amplifier board test work
Dress, including boxed basement and the removable proae mounting plate assigned in boxed basement upper end, is installed with more in the proae mounting plate
A upper end is used to correspond the test probe connected with the test point of power amplifier board to be measured, and the boxed basement, which is equipped with, supplies each survey
The perforation in boxed basement inner cavity is protruded into the lower end for souning out needle, is equipped in the inner cavity of the boxed basement and test probe power supply phase
Connect and measure the power supply detection structure of power amplifier board test point voltage to be measured, power amplifier board test fixture further includes for will be to power scale
Plate presses downwards in the pressing structure of each test probe pin upper ends.
The beneficial effects of the utility model are: in use, power amplifier board to be measured is pressed against downwards each test spy by pressing structure
The upper end of needle, since the test point of each test probe and power amplifier board to be measured is one-to-one relationship, quantity and arrangement mode
Also identical as the test point quantity and arrangement mode of power amplifier board to be measured, can be realized and fast and accurately access, and can be realized to
The good contact of power scale plate test point solves the problems, such as that artificial Repeated Clear Signal wiring is time-consuming and laborious, saves operating procedure,
Testing efficiency is improved, the generation for leading to power amplifier board damage thing to be measured because of wiring error is avoided.Moreover, the utility model
In, a possibility that detection structure of powering to be arranged in the inside of boxed basement, reduces operator's contact wire, improve survey
The safety of examination process.Moreover, the removable outside for being arranged in boxed basement of the utility model middle probe mounting plate, and each test is visited
The lower end of needle is protruded into the inner cavity of boxed basement, and whole exposed without conducting wire, use is safer, while making overall structure more
It is compact, different proae mounting plates can be selected for different size and the power amplifier board of parameter, replacement process is more convenient.
Power supply detection structure includes defeated for being electrically connected with the corresponding test point of power amplifier board to be measured by the test probe
The output lead for entering conducting wire and being connected by test probe with the corresponding test point of power amplifier board to be measured, the output lead are equipped with
The signal deteching circuit of test point voltage signal, the front end endplate outside of the boxed basement are corresponded to for acquiring power amplifier board to be measured
Equipped with being connected with signal deteching circuit and be used to show that the display screen of voltage value and control power supply detection structure power supply on-off to open
Dynamic switch.
The output lead is equipped with load resistance and the control load resistance and the output lead connects on and off
The load switch opened, the load switch are set to the front end endplate outside of boxed basement.
The front end end plate from top to bottom and is forward in tilted layout.
Power amplifier board test fixture further includes the power amplifier board placement rack being placed in above proae mounting plate, is set on power amplifier board placement rack
There is the probe that connection corresponding with each test point of power amplifier board to be measured on power amplifier board placement rack afterwards is passed through for the upper end for testing probe
Perforation.
Elasticity is pressed with pressure spring between the power amplifier board placement rack and proae mounting plate.
It is protruding upward in the proae mounting plate to be provided with for corresponding in the mounting hole for penetrating power amplifier board to be measured to function
Rate plate placement rack moves down the guide post being oriented to.
Guide post includes the top and bottom of elastic guide sleeve cooperation along the vertical direction, and the lower end is installed set on probe
On plate, the upper end is used for the mounting hole across power amplifier board to be measured and when the power amplifier board placement rack moves down and to measurement of power
The press cooperation of rate plate.
Pressing structure includes the pressing plate that can be moveed downward, on the pressing plate it is removable equipped with multiple parallel arrangements and for
The top pillar of lower press power amplifier board to be measured.
The lower end of the top pillar is soft press end.
Detailed description of the invention
Fig. 1 is the main view of the utility model power amplifier board test fixture embodiment；
Fig. 2 is the left view of Fig. 1；
Fig. 3 is the top view of Fig. 1；
Fig. 4 is the rearview of Fig. 1.
Specific embodiment
The embodiments of the present invention is described further with reference to the accompanying drawing.
The specific embodiment of the power amplifier board test fixture of the utility model, as shown in Figures 1 to 4, power amplifier board test fixture
Including boxed basement 1, proae mounting plate 8, power amplifier board placement plate 14 and the pressing structure 4 being sequentially arranged from the bottom to top, in probe
Multiple test probes 15 are fixed on mounting plate 8, in use, pressing structure 4 places power amplifier board placement plate 14 and power amplifier board
Power amplifier board to be measured on plate 14 presses downwards, and the test point on power amplifier board to be measured contacts conducting with the test one-to-one correspondence of probe 15,
Test point is detected.
Boxed basement 1 is connected with each other the box body formed, peace of the boxed basement as other component by six pieces of panels
Assembling platform.Proae mounting plate 8 passes through on the removable upper head plate 2 for being fixedly mounted on boxed basement 1 of screw.In proae mounting plate 8
Be fixedly installed with multiple test probes 15, test the quantity of probe 15 and position in proae mounting plate 8 with it is to be measured
The quantity of test point and position are consistent on power amplifier board.The probe that probe 15 includes upper end is tested, is tested under probe 15
Welding lead is held, upper and lower end is flexible to be assembled together.In the present embodiment, probe 15 is removable is assemblied in proae mounting plate 8 for test
On, it can be replaced when partial test probe damages.The inner cavity of boxed basement 1 is protruded into the lower end of test probe 15
In, for being weldingly connected with conducting wire.In the present embodiment, a perforation is opened up on upper head plate 2, enables to each test probe 15
Lower end both pass through the perforation and protrude into the interior intracavitary of boxed basement 1, the area of proae mounting plate 8 is greater than the perforation, and energy
The perforation is enough completely covered.
The upper end of proae mounting plate 8 is provided with power amplifier board placement plate 14, power amplifier board placement plate 14 and proae mounting plate 8 it
Between be pressed with multiple pressure springs along the vertical direction, realize the elasticity press fitting between proae mounting plate 8 and power amplifier board placement plate 14, power
Plate placement plate 14 is used to place power amplifier board to be measured, and multiple piercing probes are provided in power amplifier board placement plate 14 and (are not drawn in figure
Out), the quantity of piercing probe and position are consistent with the quantity of the test point on power amplifier board to be measured and position, visit
Needle perforation can be connected for test point of the probe on test probe 15 on power amplifier board to be measured.The present embodiment
In, the upper end of probe offers opening, can be with the mating grafting of test point of power amplifier board to be measured.In other embodiments, Ke Yi
The biggish perforation in aperture is opened up in power amplifier board placement plate 14, for it is each test probe 15 upper end also cross.
The inside of boxed basement 1 is placed with power supply detection structure, and power supply detection structure includes the lower end phase with test probe
The conducting wire of conducting wire even, the connection of partial test probe is the input lead being powered to power amplifier board to be measured, partial test probe
The conducting wire of connection is the output lead for output voltage, signal deteching circuit 13 is connected on output lead, to power scale
Voltage signal on plate is sent into signal deteching circuit 13 by test probe and output lead, and signal deteching circuit 13 is adopted automatically
The voltage signal of sample test point.Each signal deteching circuit 13 is corresponding with LED display 16, the electricity that signal deteching circuit 13 acquires
Pressure signal can be shown by LED display 16, intuitively be observed convenient for operator.As seen from Figure 2, boxed basement
1 front end-plate 11 is in tilted layout, and inclined direction is by being between front end-plate 11 and bottom plate up to lower extension and towards top rake
60 ° of angle can facilitate operator to observe, and LED display 16 is arranged on front end-plate 11.It is also set up on front end-plate 11
10 are started switch, the one end for starting switch 10 passes through wire connecting power, and the other end passes through input lead and test probe
It is connected to power amplifier board test point to be measured.It starts switch 10 and is used to open and close input power.
In the utility model, it is also fixedly installed with load resistance 12 in the inner cavity of boxed basement 1, load resistance 12 is used to auxiliary
The electric performance test for completing power amplifier board to be measured is helped, load resistance 12 is connected on output lead, is also installed on front end-plate 11
There is load switch 9, load switch 9 is used to control to switch on and off between load resistance 12 and output lead, and the one of load switch 9
End is wired to load resistance 12, and the other end is connected to the test of power amplifier board to be measured by output lead and test probe
Point, load switch 9 can access load resistance 12 in output circuit, can also be by load resistance 12 by output circuit
Fall.It can be realized the band load test for treating power scale plate test point and tested without carrying.
In the utility model, also fixed upwards in proae mounting plate 8 there are four (can be according to reality in other embodiments
Situation is increased and decreased) guide post (being not drawn into figure), guide post is made of top and bottom two parts, and top and bottom sleeve is led
To cooperation, lower end inner vertical direction is provided with spring, and the upper end of guide post is pyramidal structure, the bottom radius surface of pyramidal structure
Greater than the internal diameter of power amplifier board mounting hole to be measured, the upper end of guide post is penetrated in the mounting hole of power amplifier board to be measured, moreover,
It can press and cooperate with the upper end of guide post when power amplifier board to be measured moves down, drive upper end to be downwardly into lower end, treat
Moving down for power scale plate is oriented to.
The pressing structure 4 of the utility model includes pressing plate 6, is fixed with multiple compression legs 7 in the lower section of pressing plate 6, compression leg 7 is by soft
The electro-insulating rubber of matter is made, because the material is soft for compression leg 7, will not damage power amplifier board to be measured when pushing power amplifier board to be measured.It is multiple
Compression leg 7 can press downwards power amplifier board and power amplifier board placement plate 14 to be measured jointly, so that the test point and spy of power amplifier board to be measured
Head can sleeve cooperation, realize electrical conductive communication.About the structure of driving about 6 guiding of pressing plate movement, it can use pressing plate 6
Both ends guiding the modes such as be mounted on sliding rail to realize, i.e. driving about 6 guiding movement of pressing plate；It can also be hinged by pressing plate 6
In in fixing seat, pressing plate 6 is pushed by way of to lower swing.
The utility model use process is as follows: first DC power supply is connected, pressing plate 6 drive compression leg 7 move up, in function
Place power amplifier board to be measured in rate plate placement plate 14, pressing plate 6 drives compression leg 7 to move down, by power amplifier board to be measured press on probe,
It is ready for testing.Closure starts switch 10 and powers on, and treats power scale plate progress electricity by adjusting direct current power source voltage value
Gas performance test is detected the voltage value of power amplifier board test point to be measured by signal deteching circuit and is shown on LED display.
It can realize that the band of power amplifier board to be measured carries test and tests without carrying in test process by open and close load switch.It surveys
After the completion of examination, jettron is disconnected, pressing plate 6 moves upwards, and compression leg 7 is taken away power amplifier board to be measured, power amplifier board to be measured is in power amplifier board
Upward pushing tow power amplifier board placement plate under the action of pressure spring between placement plate and proae mounting plate so that power amplifier board to be measured be detached from
The contact between the probe on probe is tested, power amplifier board to be measured is then taken out.
In the utility model, power supply detection structure is placed in the interior intracavitary of boxed basement 1, moreover, proae mounting plate directly may be used
A possibility that tearing open and be fixed on boxed basement, reducing operator's contact wire improves the safety of test process.
For the power amplifier board to be measured of different size and model, it is only necessary to proae mounting plate, power amplifier board placement plate are replaced,
It being mounted on boxed basement 1 and lower end is protruded into interior intracavitary since proae mounting plate is directly removable, replacement process is simpler, and
And it also can be realized sealing to boxed basement by proae mounting plate.
In the present embodiment, power amplifier board placement plate constitutes power amplifier board placement rack, and the perforation in power amplifier board placement plate constitutes
Piercing probe.In the present embodiment, top pillar entire body is made of soft material, can be only by the lower end material of top pillar in other embodiments
Matter is changed to soft and lower end is made to constitute soft press end.
Claims (10)
1. a kind of power amplifier board test fixture, it is characterised in that: including boxed basement and the removable spy assigned in boxed basement upper end
Needle mounting plate, be installed in the proae mounting plate multiple upper ends for and the test point of power amplifier board to be measured correspond and connect
Probe is tested, the boxed basement, which is equipped with, protrudes into the perforation in boxed basement inner cavity, the box for each lower end for testing probe
It is equipped in the inner cavity of shape pedestal and supplies the power supply detection structure for being electrically connected and measuring power amplifier board test point voltage to be measured with test probe,
Power amplifier board test fixture further includes for pressing downwards power amplifier board to be measured in the pressing structure of each test probe pin upper ends.
2. power amplifier board test fixture according to claim 1, it is characterised in that: power supply detection structure includes passing through the survey
Sound out input lead that needle and the corresponding test point of power amplifier board to be measured Gong are electrically connected and by testing probe and power amplifier board to be measured
The connected output lead of corresponding test point, the output lead, which is equipped with, corresponds to test point voltage letter for acquiring power amplifier board to be measured
Number signal deteching circuit, the front end endplate outside of the boxed basement, which is equipped with, to be connected with signal deteching circuit and is used to show electricity
The display screen of pressure value and starting switch for control power supply detection structure power supply on-off.
3. power amplifier board test fixture according to claim 2, it is characterised in that: the output lead is equipped with load resistance
And the load switch that the control load resistance and the output lead switch on and off, the load switch are set to box-like bottom
The front end endplate outside of seat.
4. power amplifier board test fixture according to claim 3, it is characterised in that: the front end end plate is from top to bottom and forward
It is in tilted layout.
5. power amplifier board test fixture according to claim 1 or 2 or 3 or 4, it is characterised in that: power amplifier board test fixture is also
Including the power amplifier board placement rack being placed in above proae mounting plate, after power amplifier board placement rack is passed through equipped with the upper end for testing probe
The piercing probe of connection corresponding with each test point of power amplifier board to be measured on power amplifier board placement rack.
6. power amplifier board test fixture according to claim 5, it is characterised in that: the power amplifier board placement rack and probe are installed
Elasticity is pressed with pressure spring between plate.
7. power amplifier board test fixture according to claim 6, it is characterised in that: protruding upward in the proae mounting plate to set
It is equipped with for corresponding in the mounting hole for penetrating power amplifier board to be measured to move down the guiding being oriented to power amplifier board placement rack
Column.
8. power amplifier board test fixture according to claim 7, it is characterised in that: guide post includes elastic conducting along the vertical direction
The top and bottom cooperated to sleeve, the lower end are set in proae mounting plate, and the upper end is used for across power amplifier board to be measured
Mounting hole simultaneously cooperates when the power amplifier board placement rack is moved down with power amplifier board to be measured press.
9. power amplifier board test fixture according to claim 5, it is characterised in that: pressing structure includes the pressure that can be moveed downward
Plate, the removable top pillar equipped with multiple parallel arrangements and for pressing power amplifier board to be measured downwards on the pressing plate.
10. power amplifier board test fixture according to claim 9, it is characterised in that: the lower end of the top pillar is soft
Press end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820950156.XU CN208384010U (en) | 2018-06-20 | 2018-06-20 | Power amplifier board test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820950156.XU CN208384010U (en) | 2018-06-20 | 2018-06-20 | Power amplifier board test fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208384010U true CN208384010U (en) | 2019-01-15 |
Family
ID=64967857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820950156.XU Active CN208384010U (en) | 2018-06-20 | 2018-06-20 | Power amplifier board test fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208384010U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108693426A (en) * | 2018-06-20 | 2018-10-23 | 许继集团有限公司 | A kind of power board checking device |
| CN113791373A (en) * | 2021-08-06 | 2021-12-14 | 深圳市科陆电子科技股份有限公司 | Ammeter testing method and system, electronic equipment and storage medium |
-
2018
- 2018-06-20 CN CN201820950156.XU patent/CN208384010U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108693426A (en) * | 2018-06-20 | 2018-10-23 | 许继集团有限公司 | A kind of power board checking device |
| CN113791373A (en) * | 2021-08-06 | 2021-12-14 | 深圳市科陆电子科技股份有限公司 | Ammeter testing method and system, electronic equipment and storage medium |
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