Me ka hoʻolauna o ka ʻenehana mauna ʻili, ka nui o ka ʻūpā o Papa PCB hoʻonui wikiwiki. No laila, a no kekahi mau papa PCB me ka hoʻohaʻahaʻa haʻahaʻa a me nā mea liʻiliʻi, ʻike pinepine ʻia ka ʻike maʻalahi o nā papa PCB. In the complex PCB circuit board inspection, the needle bed test method and the double probe or flying needle test method are two common methods.

1. Ke ʻano hoʻāʻo moe kele

Aia kēia hana i nā kuʻikuʻu i hoʻouka ʻia e pili ana i kēlā me kēia kiko ʻike ma ka PCB. Hoʻoikaika ka punawai i kēlā me kēia hulina i ke kaomi o 100-200g e hōʻoia i ka launa maikaʻi ʻana ma kēlā me kēia wahi hōʻoia. Hoʻonohonoho like ʻia kēlā mau probe a kapa ʻia ʻo “nā moʻo kuʻi”. Hiki ke hoʻonohonoho ʻia nā helu hōʻike a me nā hōʻailona hōʻoia ma lalo o ka kaohi o ka polokalamu hoʻāʻo. ʻOiai hiki ke hoʻāʻo i nā ʻaoʻao ʻelua o ka PCB me ka hoʻohana ʻana i ke ʻano hoʻokolohua moena pin, i ka hoʻolālā ʻana i ka PCB, aia nā kiko kikoʻī āpau ma ka papa hao i hoʻopili ʻia o ka PCB. Needle bed tester equipment is expensive and difficult to maintain. Koho ʻia nā kui kele i nā kāʻei ʻokoʻa e like me kā lākou noi kikoʻī.

ʻO ka mea hana grid grid kumumanaʻo kumumanaʻo o kahi papa i wili ʻia me nā kui i spaced 100, 75, a i ʻole 50mil ma waena o nā kikowaena. Pins act as probes and make direct mechanical connections using electrical connectors or nodes on the PCB board. If the pad on the PCB matches the test grid, a polyvinyl acetate film, perforated according to the specification, is placed between the grid and the PCB to facilitate the design of specific probes. Continuity detection is achieved by accessing the end points of the mesh, which have been defined as the X-y coordinates of the pad. Since every network on the PCB is continuously inspected. In this way, an independent detection is completed. Eia nō naʻe, ka palena o ke kuʻina ke kaupalena nei i ka pono o ke ʻano o ka moʻo-moʻo.

2. Pālua probe a i ʻole ka lele ʻana i ke ʻano o ka ʻaʻaki lele

ʻAʻole kaukaʻi ka mea hoʻāʻo lele e kaukaʻi i ke ʻano pin i kau ʻia ma ka fixt a i ʻole ka bracket. Ma muli o kēia ʻōnaehana, kau ʻia he ʻelua a ʻoi paha mau probe ma luna o nā poʻo ʻumeʻume, a hoʻoneʻe manuahi hoʻi i ka mokulele XY, a hoʻomalu pololei ʻia nā kiko hōʻike e nā ʻikepili CADI Gerber. The two probes can move within 4mil of each other. Hiki i nā hulina ke neʻe kūʻokoʻa a ʻaʻohe palena maoli i ke kokoke loa e hiki ai i kekahi i kekahi. ʻO ka mea hōʻoia me nā lima ʻelua e neʻe i mua a i waho e hoʻokumu ʻia i nā ana capacitance. The PCB board is pressed against an insulating layer on a metal plate that acts as another metal plate for the capacitor. Inā aia kahi pōkole pokole ma waena o nā laina, e ʻoi aku ka nui o ka capacitance ma mua o kekahi kiko. Inā he mau haki kaapuni, e liʻiliʻi ka capacitance.

For a general grid, the standard grid for boards and surface mount equipment with pin components is 2.5mm, and the test pad should be greater than or equal to 1.3mm. If the grid is small, the test needle is small, brittle and easily damaged. No laila, ʻoi aku ka nui o ka grid ma mua o 2.5mm. ʻO ka hui pū ʻana o kahi mea hoʻāʻo honua (tester grid standard) a me kahi mea hoʻāʻo nī lele e hiki ai i ka hoʻokolohua pololei a me ka hoʻokele waiwai o nā papa PCB kiʻekiʻe. Hoʻohana kekahi hana i kahi mea hoʻāʻo rubber conductive, kahi hana i hiki ke hoʻohana ʻia e ʻike i nā kiko e ʻalo aʻe mai ka pūnaewele. Eia nō naʻe, nā kiʻekiʻe kiʻekiʻe o nā pads me ka hoʻohaʻahaʻa ea wela e ālai i ka pili o nā kiko hōʻike.

ʻO nā pae ʻekolu aʻe o ka ʻike ʻana e hana mau ʻia.

1) ʻIke papa bare;

2) ʻIke pūnaewele;

3) ʻIke hana.

Hiki ke hoʻohana ʻia ka mea hoʻāʻo kūlohelohe e hoʻāʻo i nā papa PCB o hoʻokahi kaila a me ke ʻano, a no nā noi kūikawā hoʻi.