CN202351358U - On-line testing device of PCB (printed circuit board) of electric energy meter - Google Patents
On-line testing device of PCB (printed circuit board) of electric energy meter Download PDFInfo
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- CN202351358U CN202351358U CN2011203944257U CN201120394425U CN202351358U CN 202351358 U CN202351358 U CN 202351358U CN 2011203944257 U CN2011203944257 U CN 2011203944257U CN 201120394425 U CN201120394425 U CN 201120394425U CN 202351358 U CN202351358 U CN 202351358U
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Abstract
本实用新型提出一种电能表PCB板在线测试装置，包括气动单元、测试针床、基座、压紧机构、模拟电路单元和显示单元，测试针床置于基座顶端，模拟电路单元置于基座内部；通过显示单元向气动单元发出工作指令，位于基座上方的气动单元驱动压紧机构沿固定在基座顶端的导向轴进行上、下运动，使被测PCB板与位于其下方的测试针床相接触；模拟电路单元将接收到的电信号进行转换、隔离后分别为测试针床和显示单元供电，测试针床向被测PCB板加载电信号，并采集被测PCB板测试点的电信号发送至显示单元进行显示。与现有PCB板测试装置相比，具有制作成本低廉，使用操作简单，维修保养方便，装置占用空间小，可以直接安置在流水线工作台等优点。
The utility model proposes an online testing device for electric energy meter PCB board, which includes a pneumatic unit, a test needle bed, a base, a pressing mechanism, an analog circuit unit and a display unit, the test needle bed is placed on the top of the base, and the analog circuit unit is placed on the top of the base. Inside the base; the display unit sends work instructions to the pneumatic unit, and the pneumatic unit above the base drives the pressing mechanism to move up and down along the guide shaft fixed on the top of the base, so that the PCB board under test and the PCB below it The test needle bed is in contact with each other; the analog circuit unit converts and isolates the received electrical signal and supplies power to the test needle bed and the display unit respectively, and the test needle bed loads electrical signals to the tested PCB board and collects the test points of the tested PCB board The electrical signal is sent to the display unit for display. Compared with the existing PCB board testing device, it has the advantages of low manufacturing cost, simple operation, convenient maintenance, small space occupied by the device, and can be directly placed on the workbench of the assembly line.
Description
Technical field
The utility model belongs to the electric energy metrical field, is specifically related to a kind of electric energy meter pcb board online testing device.
Background technology
Along with the construction of the strong intelligent grid of China development, require increasingly highly for research and development, the quality of production control of intelligent electric energy meter, so the raising of the test technology level of electric energy meter production run is more and more important.The PCB bare board detects the conduction can only detect short circuit, open circuit, net table in traditional electric energy meter manufacturing process, and after functional test is final assembly, various, the consuming time consumption of the maintenance procedures of pinpointing the problems worker.
In order to overcome above-mentioned defective; PCB universal test device early is to cooperate ball-screw to come the member such as test fixture on the test machine is driven through servomotor; Adopt this drive unit, can cause complex structure, the cost of test machine to cross high defective.In order further to improve the structure of proving installation; Recent pcb board test machine normally is placed on test with detected PCB and tests on the needle-bar, though this PCB test machine is a lot of with respect to the designs simplification of early PCB universal test device, but still can not satisfy the growth requirement of the test technology level of electric energy meter production run; Because structure is still too complicated; Not only floor area is excessive, and operating maintenance all compares difficulty, is unfavorable for upgrading and the further expanding of function.
For this reason, the utility model proposes a kind ofly to design the electric power table pcb board online testing device for the circuit board detecting operation.
The utility model content
In order to overcome the above-mentioned defective of prior art, the purpose of the utility model is to propose a kind of simple in structure, operating maintenance convenient, floor area is little electric energy meter pcb board online testing device.
The proving installation of the utility model is realized through following technical scheme:
A kind of electric energy meter pcb board online testing device comprises pneumatic unit, test needle-bar, pedestal, hold-down mechanism, analog circuit unit and display unit, and said test needle-bar places the pedestal top, and said analog circuit unit places base interior; Send work order through display unit to pneumatic unit, the pneumatic unit that is positioned at the pedestal top drives hold-down mechanism and carries out upper and lower moving along the axis of guide that is fixed on the pedestal top, and detected PCB is contacted with the test needle-bar that is positioned at its below; After changing the electric signal that receives, isolate, said analog circuit unit is respectively the power supply of test needle-bar and display unit; Said test needle-bar loads electric signal to detected PCB, and the electric signal of gathering the detected PCB test point is sent to display unit and shows.
Further; Said hold-down mechanism can comprise sliding bearing, the axis of guide, support, pressure frame, transparent pressing plate and pressure head; The said axis of guide and support all are fixed on the pedestal; Each pressure head is installed on the bottom of pressing frame through corresponding transparent pressing plate respectively, said pressure frame be connected the sliding bearing Joint on the axis of guide with sliding type.
Further; Because the test point of various pcb boards is different; Put on and press the position of contact also can change to some extent on the detected PCB, in order to satisfy the demand that the utility model proving installation can detect the variety classes circuit board, can be after changing detected PCB; After earlier said pressure head and transparent pressing plate being adjusted to correct position, be installed on the bottom of said pressure frame again through fixture.
Further; Said pneumatic unit can comprise cylinder and solenoid valve; Said cylinder is fixed on the support of hold-down mechanism and the output shaft of cylinder is connected to extending below with the pressure frame of hold-down mechanism, and the work order control cylinder that said solenoid valve is sent according to display unit drives hold-down mechanism detected PCB is carried out pressing or locking control.
Further; Said analog module can comprise substrate and be embedded at receiving circuit, change-over circuit, isolating transformer and the feed circuit on the substrate; Said receiving circuit is sent to change-over circuit with the 220V voltage that receives and converts the 5V small voltage to; After this small voltage is isolated through isolating transformer, be respectively test needle-bar and display unit power supply through feed circuit.
Further, can be provided with the interface of be used to peg graft voltage table and reometer on the said substrate.
Further, can also be provided with the expansion interface that is used to realize expanded function on the said substrate, said expansion interface can comprise following arbitrary or whole interface:
The interface that is used for external single-chip microcomputer fever writes is through the online programming of this interface realization the utility model proving installation;
Be used to connect the digital interface of external computer, make the utility model proving installation upgrade to full-automatic online computer diagnostic test through this data-interface.
Further, said display unit can comprise and is plugged in the display board on the pedestal front panel and is fixed in LCDs, voltage table, reometer, clearing lamp and the control knob on the display board.
This control knob can comprise power knob, the up button of cylinder, cylinder descending button, and following arbitrary or whole control knob can also be set as required: the test button of uncapping, program button, wheel show button or the like.
Further, said detected PCB can adopt contact pin, female type structure to be connected with the test needle-bar.
The beneficial effect of the utility model is:
1) this proving installation slides up and down along the axis of guide through pneumatic unit driving hold-down mechanism, thereby realizes the pressing/locking control to detected PCB, reaches the purpose that detects detected PCB; Compare with existing pcb board proving installation; Have low preparation cost, use simple to operate, maintenance convenient; Device takes up room little, can directly be placed in advantages such as streamline worktable.
2) replacing that can adapt according to the kind of detected PCB of the test needle-bar in this proving installation, pressure head also can be arranged arbitrarily according to the kind of detected PCB, so just can realize detecting the circuit board of variety classes electric energy meter product.
3) this proving installation can a tractor serves several purposes; Has very strong extendability; The pcb board that not only can be used for quality control detects; Can also be through expansion interface be set on the substrate, thus realize this proving installation online programming, product maintenance, upgrade to expanded function such as full-automatic online computer diagnostic test.
Description of drawings
Fig. 1 is the front view of the utility model proving installation;
Fig. 2 is the right view of the utility model proving installation.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the utility model is done further detailed description.
According to the rough Statistics of production run in the past, 80% the bug list of in the production run of electric energy meter, having an appointment is that failure welding causes.Therefore before the electric energy meter assembling, it is the best solution of stopping electric energy meter production bad phenomenon that the welding back is detected circuit board.For this reason, the electric energy meter pcb board online testing device of the utility model designs application for the circuit board detecting operation just.
Like Fig. 1, shown in Figure 2; The proving installation of the utility model mainly is made up of following components: pneumatic unit 1, test needle-bar 2, pedestal 4, hold-down mechanism, analog circuit unit 11 and display unit 12; Test needle-bar 2 places the top of pedestal 4; Detected PCB 3 is placed on the test needle-bar 2, and pneumatic unit 1 drives the upper and lower motion of hold-down mechanism detected PCB 3 is carried out pressing/locking control, and analog circuit unit 11 places pedestal 4 inside; Display unit 12 places on the front panel of pedestal 4; Analog circuit unit 11 is connected with display unit 12 with test needle-bar 2 respectively through lead-in wire and for the two supplies power, and test needle-bar 2 and display unit 12 are connected through lead-in wire, is sent to display unit 12 and shows through testing on the needle-bar 2 collection detected PCB 3 electric signal of test point.
Respectively each several part is elaborated below:
1) pneumatic unit 1: comprise cylinder and solenoid valve.Cylinder be fixed on the support 7 of hold-down mechanism and the output shaft of cylinder to pressure frame 8 Joints that extend below with hold-down mechanism; The work order control cylinder that solenoid valve is sent according to display unit 12 drives hold-down mechanism detected PCB 3 is carried out pressing or locking control.
Cylinder and solenoid control pressure head 10 move up and down, and stroke is adjustment arbitrarily in controlled range.Uplink and downlink speed also can, cylinder descending control knob realization adjusting up by the cylinder of display unit 12.
2) test needle-bar 2: it accurately processes the location through professional CNC, and this test needle-bar 2 adopts socket, contact pin type to realize being connected with detected PCB 3, makes things convenient for upgrading product and maintenance.
3) pedestal 4: adopt premium insulation bakelite and metal cabinet to form, assurance device is solid reliably, dismounting is easy to maintenance.
4) hold-down mechanism: comprise sliding bearing 5, the axis of guide 6, support 7, press frame 8, transparent pressing plate 9 and pressure head 10.The axis of guide 6 all is fixed on the pedestal 4 with support 7, can be provided with a plurality of pressure heads 10 as required, and each pressure head 10 is installed on the bottom of pressing frame 8 through a transparent pressing plate 9 respectively, and sliding bearing 5 is slidingly connected on the axis of guide 6.In this example, two axis of guides 6 are arranged between the support 7, press sliding bearing 5 Joints on frame 8 and two axis of guides 6, and the air cylinder driven of pneumatic unit 1 presses frame 8 to do upper and lower moving along the axis of guide 6, with pressing or the locking control of realization to detected PCB.
Because the test point of various pcb boards is different; Put on and press the position of contact also can change to some extent on the detected PCB; In order to satisfy the demand that the utility model proving installation can detect the variety classes circuit board; Can after changing detected PCB, with pressure head 10 with after transparent pressing plate 9 is adjusted to correct position accordingly, be installed on the bottom of pressing frame 8 through fixture more earlier.
This hold-down mechanism adopts aluminium section bar and straight line slidable bearing to realize guide-localization; The probe and the testing needle bench grafting that guarantee pcb board to be measured touch precise and stable; Pressure head 10 adopts detachable structure with transparent pressing plate 9; Can be according to the difference of detected PCB, adjustment pressure head 10 makes when pressing the position of frame 8 bottoms with transparent pressing plate 9 presses the contact to arrange arbitrarily, makes that the device usable range is more extensive.
5) analog module 11: comprise substrate and be embedded at receiving circuit, change-over circuit, isolating transformer and the feed circuit on the substrate.The external 220V voltage that receiving circuit will receive, and send it to change-over circuit and convert the 5V small voltage to, after this small voltage is isolated through isolating transformer, be respectively test needle-bar 2 and display unit 12 power supplies through feed circuit.
This analog module 11 can provide control power supply, electric current, voltage and load to detected PCB 3 through test needle-bar 2; Detected PCB 3 is moved in a similar complete electric energy meter power utilization environment fully, thereby can be detected functions such as relevant infrared, communication, break-make electricity.
Substrate is provided with the corresponding interface of be used to peg graft voltage table and reometer, in order to realize the extensibility of the utility model proving installation, can also be provided with the expansion interface that is used to realize multiple expanded function by substrate, for example:
The interface that is used for external single-chip microcomputer fever writes is through the online programming of this interface realization the utility model proving installation; And/or be used to connect the digital interface of external computer, make the utility model proving installation upgrade to full-automatic online computer diagnostic test through this data-interface.
6) display unit 12: comprise display board and be installed in LCDs, voltage table, reometer, clearing lamp and the various control knob on the display board.
Display board adopts socket type directly to be plugged on the front panel of pedestal 4; Operating personnel can directly read the various parameters of detected PCB 3 through LCDs; Leave the position that is used to install voltage table and reometer gauge outfit part on the display board, the rear end of voltage table and reometer directly is plugged in the corresponding interface place on the substrate of analog module 11; Clearing lamp comprises pulse, pulse per second (PPS), relay or the like, can be through the demonstration testing result of clearing lamp intuitive and convenient; Control knob must comprise power knob, the up button of cylinder and cylinder descending button, can also expand following arbitrary or whole control knob as required: the test button of uncapping, program button, wheel show button or the like.
Principle of work with proving installation of said structure is:
When carrying out the PCB test, the detected PCB 3 with the good probe of cloth is fixed on the test needle-bar 2 earlier, and probe is contacted with the test needle-bar; Press power knob and cylinder descending button through display unit 12, send work order through the cylinder descending button to the solenoid valve of pneumatic unit 1, the pressure head 10 of solenoid control air cylinder driven hold-down mechanism presses down and pressing detected PCB 3 along the axis of guide 6; Respectively to test needle-bar 2 and display unit 12 power supplies, the test needle-bar electrically conducts/Insulation test to detected PCB 3 through analog circuit unit 11, and test parameter (magnitude of voltage, current value etc.) the back test of reading detected PCB from display unit 12 finishes; Press the up button of cylinder of display unit 12 then, cylinder rises, and takes out tested pcb board 3, thereby carries out the next round test.
Should be noted that at last: above embodiment only in order to the explanation the utility model technical scheme but not to its restriction; Although the utility model has been carried out detailed explanation with reference to the foregoing description; Under the those of ordinary skill in field be to be understood that: still can make amendment or be equal to replacement the embodiment of the utility model; And do not break away from any modification of the utility model spirit and scope or be equal to replacement, it all should be encompassed in the middle of the claim scope of the utility model.
Claims (9)
1. electric energy meter pcb board online testing device; Comprise pneumatic unit (1), test needle-bar (2), pedestal (4), hold-down mechanism, analog circuit unit (11) and display unit (12); It is characterized in that: said test needle-bar (2) places pedestal (4) top, and said analog circuit unit (11) places pedestal (4) inside; Send work order through display unit (12) to pneumatic unit (1); The pneumatic unit (1) that is positioned at the pedestal top drives hold-down mechanism and carries out upper and lower motion along the axis of guide (6) that is fixed on the pedestal top, and detected PCB (3) is contacted with the test needle-bar (2) that is positioned at its below; After changing the electric signal that receives, isolate, said analog circuit unit (11) is respectively the power supply of test needle-bar (2) and display unit (12); Said test needle-bar (2) loads electric signal to detected PCB (3), and the electric signal of gathering the detected PCB test point is sent to display unit (12) and shows.
2. electric energy meter pcb board online testing device as claimed in claim 1; It is characterized in that: said hold-down mechanism comprises sliding bearing (5), the axis of guide (6), support (7), presses frame (8), transparent pressing plate (9) and pressure head (10); The said axis of guide (6) and support (7) all are fixed on the pedestal (4); Each pressure head (10) is installed on the bottom of pressing frame (8) through corresponding transparent pressing plate (9) respectively, said pressure frame (8) be connected sliding bearing (5) Joint on the axis of guide (6) with sliding type.
3. electric energy meter pcb board online testing device as claimed in claim 2; It is characterized in that: according to putting on the demand of pressing the contact on the pcb board to be measured; With said pressure head (10) with after transparent pressing plate (9) is adjusted to correct position accordingly, be installed on the bottom of said pressure frame (8) again through fixture earlier.
4. like claim 2 or 3 described electric energy meter pcb board online testing device; It is characterized in that: said pneumatic unit (1) comprises cylinder and solenoid valve; The support (7) that said cylinder is fixed in hold-down mechanism goes up and the output shaft of cylinder is connected to extending below with the pressure frame (8) of hold-down mechanism, and the work order control cylinder that said solenoid valve is sent according to display unit (12) drives hold-down mechanism detected PCB (3) is carried out pressing or locking control.
5. electric energy meter pcb board online testing device as claimed in claim 1; It is characterized in that: said analog module (11) comprises substrate and is embedded at receiving circuit, change-over circuit, isolating transformer and the feed circuit on the substrate; Said receiving circuit is sent to change-over circuit with the 220V voltage that receives and converts the 5V small voltage to; After this small voltage is isolated through isolating transformer, be respectively test needle-bar (2) and display unit (12) power supply through feed circuit.
6. electric energy meter pcb board online testing device as claimed in claim 5 is characterized in that: said substrate is provided with the interface of be used to peg graft voltage table and reometer.
7. electric energy meter pcb board online testing device as claimed in claim 6, it is characterized in that: said substrate is provided with the expansion interface that is used to realize expanded function, and said expansion interface comprises following arbitrary or whole interface:
The interface that is used for external single-chip microcomputer fever writes,
Be used to connect the digital interface of external computer.
8. electric energy meter pcb board online testing device as claimed in claim 1 is characterized in that: said display unit (12) comprises and is plugged in the display board on pedestal (4) front panel and is fixed in LCDs, voltage table, reometer, clearing lamp and the control knob on the display board.
9. electric energy meter pcb board online testing device as claimed in claim 1 is characterized in that: said detected PCB (3) adopts contact pin, female type structure to be connected with test needle-bar (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203944257U CN202351358U (en) | 2011-10-17 | 2011-10-17 | On-line testing device of PCB (printed circuit board) of electric energy meter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203944257U CN202351358U (en) | 2011-10-17 | 2011-10-17 | On-line testing device of PCB (printed circuit board) of electric energy meter |
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| CN202351358U true CN202351358U (en) | 2012-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203944257U Expired - Lifetime CN202351358U (en) | 2011-10-17 | 2011-10-17 | On-line testing device of PCB (printed circuit board) of electric energy meter |
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| CN (1) | CN202351358U (en) |
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- 2011-10-17 CN CN2011203944257U patent/CN202351358U/en not_active Expired - Lifetime
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| C14 | Grant of patent or utility model | ||
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Owner name: STATE GRID CORPORATION OF CHINA Free format text: FORMER OWNER: CHINA ELECTRIC POWER RESEARCH INSTITUTE Effective date: 20140321 Owner name: CHINA ELECTRIC POWER RESEARCH INSTITUTE Effective date: 20140321 |
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Free format text: CORRECT: ADDRESS; FROM: 100192 HAIDIAN, BEIJING TO: 100031 XICHENG, BEIJING |
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Effective date of registration: 20140321 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: China Electric Power Research Institute Address before: 100192 Beijing city Haidian District Qinghe small Camp Road No. 15 Patentee before: China Electric Power Research Institute |
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Granted publication date: 20120725 |
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