CN202631671U - PCB testing device - Google Patents

PCB testing device Download PDF

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Publication number
CN202631671U
CN202631671U CN 201220002172 CN201220002172U CN202631671U CN 202631671 U CN202631671 U CN 202631671U CN 201220002172 CN201220002172 CN 201220002172 CN 201220002172 U CN201220002172 U CN 201220002172U CN 202631671 U CN202631671 U CN 202631671U
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CN
China
Prior art keywords
controller
voltage
pcb board
module
test
Prior art date
Application number
CN 201220002172
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Chinese (zh)
Inventor
李小明
Original Assignee
深圳创维数字技术股份有限公司
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Priority to CN 201220002172 priority Critical patent/CN202631671U/en
Application granted granted Critical
Publication of CN202631671U publication Critical patent/CN202631671U/en

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Abstract

Disclosed is a PCB testing device, comprising a controller for generating control voltage switching signals according to the input testing control signals, a voltage switching module which is connected with the controller and used for carrying out voltage switching for outputting voltage to the to-be-tested PCB according to control voltage switching signals generated by the controller, and a voltage acquisition module which is connected with the controller and used for collecting the voltage upon the to-be-tested PCB and outputting the voltage to the controller. The PCB testing device of the utility model determines whether the PCB has short circuit or not by adopting the A/D acquisition method for testing, and is capable of realizing automatic scanning and testing of multiple paths of to-be-tested PCBs.

Description

A kind of pcb board testing apparatus

Technical field

The utility model relates to the pcb board field tests, is specifically related to a kind of pcb board testing apparatus.

Background technology

The technological level development of pcb board manufacturing at present is very fast; The complicacy of circuit board improves constantly; And in the production run of pcb board, often need carry out the test of pcb board micro-short circuit, with the stability of checking pcb board; How under the situation of the increasingly sophisticated property of pcb board manufacturing process, to test judging whether pcb board exists micro-short circuit, be the key of whole test process.

The method of prior art test pcb board micro-short circuit is through adopting the infrared imaging microscope; The amplification of pcb board image is searched; But the needed testing apparatus cost of the method for this test pcb board micro-short circuit is high; And maintenance cost is high, and is high to tester's competency profiling, can't realize automatic test.

Summary of the invention

The utility model provides a kind of pcb board testing apparatus, but autoscan test multichannel detected PCB is judged whether micro-short circuit of pcb board to be measured.

In order to solve the problems of the technologies described above, the utility model embodiment provides a kind of pcb board testing apparatus, comprising:

Be used for generating the controller of control voltage switching signal according to the test control signal of input;

Link to each other with said controller, be used for carrying out voltage and switch with voltage handover module to pcb board output voltage to be measured according to the control voltage switching signal that said controller generates;

And link to each other with said controller, the voltage acquisition module that is used to gather the voltage on the said pcb board to be measured and exports to said controller.

Particularly, said voltage acquisition module comprises:

Be used to gather the collecting unit of the voltage on the pcb board to be measured;

Be connected with said collecting unit, the voltage that is used for collecting unit is collected carries out analog to digital conversion, obtains the AD conversion unit of voltage digital signal;

Wherein, said AD conversion unit comprises high-precision A/D conversion chip.

Particularly, also comprise:

Be connected with said controller, be used to obtain the button acquisition module of the test control signal that mechanical key or wireless telecommunications button send.

Particularly, also comprise:

Link to each other with said controller, be used to show the display of said controller according to the test signal of said voltage digital signal output.

Particularly, also comprise:

Link to each other with said controller, be used for test signal, the alarm module of pointing out and reporting to the police according to said controller output.

Particularly, also comprise:

Link to each other with said controller, be used for the serial port module that is connected with outside upper control machine;

Wherein, said upper control machine is used for the instruction that is provided with to said controller transmission mode of operation through said serial ports UART, perhaps receives the said test signal that said controller sends through said serial ports UART.

Particularly, also comprise:

Link to each other with said voltage handover module, be used to produce the DC-DC module that different output voltage offers said voltage handover module.

Particularly, also comprise:

Link to each other with said controller, be used to store the memory module of the test result of said test push button signalling and said controller.

Particularly, said controller also comprises:

In all kinds of single-chip microcomputers any or micro-control DSP or micro-control ARM or micro-control PLL.

Particularly, said display module comprises:

In LCD screen, charactron, the LED screen any.

Among the utility model embodiment; Control module generates control voltage switching signal according to the test control signal of input; And transmit control signal to the voltage handover module, so that said voltage handover module switches to corresponding detected PCB with the different output voltage of DC-DC module, realize the tested pcb board of test multichannel automatically; Said voltage acquisition module is gathered the output voltage values of pcb board to be measured end to be measured and is issued control module through the A/D conversion; Said control module is judged whether said pcb board to be measured exists little electric current, thereby is judged whether pcb board to be measured exists micro-short circuit according to the collection result that said voltage acquisition module sends.

Description of drawings

In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiment of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the first routine structural representation of a kind of pcb board testing apparatus of providing of the utility model embodiment;

Fig. 2 is the second routine structural representation of a kind of pcb board testing apparatus of providing of the utility model embodiment.

Embodiment

To combine the accompanying drawing among the utility model embodiment below, the technical scheme among the utility model embodiment is carried out clear, intactly description, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.

Fig. 1 is the first routine structural representation of a kind of pcb board testing apparatus of providing of the utility model embodiment, and is as shown in Figure 1, comprising: voltage handover module 10, and controller 20 and voltage acquisition module 30, wherein:

Said controller 20 is used for generating control voltage switching signal according to the test control signal of input;

Said voltage handover module 10 links to each other with said controller 20, is used for carrying out voltage according to the control voltage switching signal that said controller 20 generates and switches with to pcb board output voltage to be measured;

Said voltage acquisition module 30 links to each other with said controller 20, is used to gather the voltage on the said pcb board to be measured and exports to said controller 20.

Need to prove that said voltage acquisition module 30 comprises: the collecting unit that is used to gather the voltage on the said pcb board to be measured; Be connected with said collecting unit, the voltage that is used for collecting unit is collected carries out analog to digital conversion, obtains the mould converting unit of voltage digital signal; Wherein, said analog-converted unit comprises high-precision A/D conversion chip.

Said controller also comprises: any in all kinds of single-chip microcomputers or micro-control DSP or micro-control ARM or micro-control PLL.

In the present embodiment; Comprise polylith etc. pcb board to be tested; The control voltage switching signal that voltage handover module 10 generates according to said controller 20 is carried out the voltage switching so that export test voltage to a certain pcb board to be measured wherein, and promptly said voltage switching mould 10 switches to different output voltage with the voltage of importing and continues to the pcb board to be measured of correspondence.Said voltage acquisition module 30 links to each other with said controller 20; Be used to gather the voltage on the said pcb board to be measured and after the A/D conversion, export to said control module 20; Said controller 20 is according to the voltage digital signal of received said voltage acquisition module 30 outputs; Judge whether pcb board to be measured exists little electric current, thereby judge whether pcb board to be measured exists micro-short circuit, and will whether have the test result storage of micro-short circuit; Or be sent to external upper control machine, or directly send to display and show this test result through serial ports.

The utility model embodiment provides a kind of pcb board testing apparatus; The method test of adopting A/D to gather judges whether pcb board to be measured exists little electric current; Thereby judge whether micro-short circuit of pcb board to be measured; And the test voltage value can realize that test voltage can be provided with in advance, and can realize the tested pcb board of autoscan test multichannel through the DC-DC module in manually adjustment continuously of output voltage range.

Fig. 2 is second structural representation of a kind of pcb board testing apparatus of providing of the utility model embodiment; As shown in Figure 2; The structural representation of said pcb board testing apparatus removes and comprises the voltage handover module 10 in the pcb board testing apparatus among above-mentioned first embodiment; Outside controller 20 and the voltage acquisition module 30, also comprise DC-DC module 40, display 50, alarm module 60, serial port module 70, memory module 80 and button acquisition module 90, wherein:

Said button acquisition module 90 links to each other with said controller 20, is used to obtain the test control signal that mechanical key or wireless telecommunications button send;

Said display 50 links to each other with said controller 20, is used to show the test result of said controller 20 according to said voltage digital signal output;

Said alarm module 60 links to each other with said controller 20, is used for pointing out and reporting to the police according to the test signal of said controller 20 outputs;

Said serial port module 70 links to each other with said controller 20, is used for being connected with outside upper control machine.Wherein, said upper control machine is used for the instruction that is provided with to said controller 20 transmission mode of operations through said serial ports UART, perhaps receives the said test signal that said controller 20 sends through said serial ports UART;

Said DC-DC module 40 links to each other with said voltage handover module 10, is used to produce different output voltage and offers said voltage handover module 10;

Said memory module 80 links to each other with said controller 20, is used to store the test result of test control signal that said button acquisition module 90 collects and said controller 20;

Need to prove; Button acquisition module 90 is connected with mechanical key; Comprise that perhaps a wireless receiver is connected with Digiplex; Said button acquisition module 90 can be according to the key information of mechanical key or Digiplex, on-load voltage, survey record inquiry etc. between the mode of operation of setting pcb board testing apparatus, pcb board.

The mode of operation of said pcb board testing apparatus comprises voltage setting pattern and test pattern; When voltage is set pattern; 90 key informations according to mechanical key or Digiplex of button acquisition module preset detecting information to controller 20, and said detecting information comprises: on-load voltage between " model code " of pcb board to be measured, plate, test quantity simultaneously.Controller 20 writes memory module 80 with said detecting information; When test pattern; Then voltage acquisition module 30 circle collections change each road pcb board to be measured voltage and send to controller 20; Said controller 20 is according to the voltage digital signal of the said said voltage acquisition module that receives 30 outputs; Judge whether each pcb board to be measured exists little electric current, thereby judge whether each pcb board to be measured exists micro-short circuit, and will whether have the test result storage of micro-short circuit; Or be sent to external upper control machine, or directly send to display and show this test result through serial ports.

Said display 50 comprises: in LCD screen, charactron, the LED screen any, said display 50 is used to show the current state information of pcb board micro-short circuit to be measured.

Said upper control machine is except sending being provided with the instruction of mode of operation through said serial ports UART to said controller 20; Can also communicate as receiving the said test signal that said controller 20 sends, through the working condition of the whole testing apparatus of instruction control with said testing apparatus through said serial ports UART.

DC-DC module 40 is used for producing different output voltage such as OUT1, OUT2, and OUT3 etc. so that said voltage handover module 10 switches to corresponding pcb board to be measured with different output voltage, realize testing simultaneously the tested pcb board of multichannel.In the utility model embodiment, voltage handover module 10 can switch eight groups of detected PCB simultaneously and be separate.

Said memory module 80 comprises: adopt the EEPROM of iic bus communication or the FLASH of other communication modes.

In the present embodiment; Upper control machine sends being provided with outside the instruction of mode of operation through serial port module 70 to said controller 20, can also communicate as receiving the said test signal that said controller 20 sends through said serial ports UART, through the working condition of the whole testing apparatus of instruction control with said testing apparatus; Memory module 80 links to each other with said controller 20; Be used to store the test control signal that said button acquisition module 90 collects and the test result of said controller 20, DC-DC module 40 is used for producing different output voltage such as OUT1, OUT2; OUT3 etc.; So that said voltage handover module 10 switches to corresponding pcb board to be measured with different output voltage, to realize testing simultaneously on the tested pcb board of multichannel, display 50 is used to show the current state information of pcb board micro-short circuit to be measured; Button acquisition module 90 is used to set on-load voltage, survey record inquiry etc. between the mode of operation, pcb board of pcb board micro-short circuit test fixture to be measured; Alarm module 60 is used for the test signal according to 20 outputs of said controller, points out and reports to the police, and the mode of operation that button acquisition module 90 sets comprises that voltage sets pattern and test pattern; If voltage mode; 90 of button acquisition modules preset detecting information to controller 20, and said detecting information is write memory module 80, if test pattern; The then tested terminal voltage of pcb board and the transmit control device 20 on voltage acquisition module 30 each road of cyclic transformation, said controller 20 judges it is whether pcb board to be measured exists micro-short circuit according to said tested terminal voltage.The utility model embodiment provides a kind of pcb board testing apparatus, and pcb board is judged in the method test of adopting A/D to gather, and micro-short circuit and test voltage are predeterminable, and can realize that autoscan tests the tested pcb board of multichannel.

Above disclosedly be merely the utility model preferred embodiment, can not limit the interest field of the utility model certainly with this, the equivalent variations of therefore being done according to the utility model claim still belongs to the scope that the utility model is contained.

Claims (10)

1. a pcb board testing apparatus is characterized in that, comprising:
Be used for generating the controller of control voltage switching signal according to the test control signal of input;
Link to each other with said controller, be used for carrying out voltage and switch with voltage handover module to pcb board output voltage to be measured according to the control voltage switching signal that said controller generates;
And link to each other with said controller, the voltage acquisition module that is used to gather the voltage on the said pcb board to be measured and exports to said controller.
2. pcb board testing apparatus as claimed in claim 1 is characterized in that, said voltage acquisition module comprises:
Be used to gather the collecting unit of the voltage on the said pcb board to be measured;
Be connected with said collecting unit, the voltage that is used for collecting unit is collected carries out analog to digital conversion, obtains the AD conversion unit of voltage digital signal;
Wherein, said AD conversion unit comprises high-precision A/D conversion chip.
3. pcb board testing apparatus as claimed in claim 2 is characterized in that, also comprises:
Be connected with said controller, be used to obtain the button acquisition module of the test control signal that mechanical key or wireless telecommunications button send.
4. pcb board testing apparatus as claimed in claim 3 is characterized in that, also comprises:
Link to each other with said controller, be used to show the display of said controller according to the test signal of said voltage digital signal output.
5. pcb board testing apparatus as claimed in claim 4 is characterized in that, also comprises:
Link to each other with said controller, be used for test signal, the alarm module of pointing out and reporting to the police according to said controller output.
6. pcb board testing apparatus as claimed in claim 5 is characterized in that, also comprises:
Link to each other with said controller, be used for the serial port module that is connected with outside upper control machine;
Wherein, said upper control machine perhaps receives the said test signal that said controller sends through said serial ports UART through the instruction that is provided with of said serial ports UART to said controller transmission mode of operation.
7. pcb board testing apparatus as claimed in claim 6 is characterized in that, also comprises:
Link to each other with said voltage handover module, be used to produce the DC-DC module that different output voltage offers said voltage handover module.
8. pcb board testing apparatus as claimed in claim 7 is characterized in that, also comprises:
Link to each other with said controller, be used to store the memory module of the test result of said test push button signalling and said controller.
9. like each described pcb board testing apparatus of claim 1 to 8, it is characterized in that said controller also comprises: any in all kinds of single-chip microcomputers or micro-control DSP or micro-control ARM or micro-control PLL.
10. like each described pcb board testing apparatus of claim 1 to 8, it is characterized in that said display module comprises: any in LCD screen, charactron, the LED screen.
CN 201220002172 2012-01-05 2012-01-05 PCB testing device CN202631671U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220002172 CN202631671U (en) 2012-01-05 2012-01-05 PCB testing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220002172 CN202631671U (en) 2012-01-05 2012-01-05 PCB testing device

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Publication Number Publication Date
CN202631671U true CN202631671U (en) 2012-12-26

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103149527A (en) * 2013-04-02 2013-06-12 精成科技电子(东莞)有限公司 Printed circuit board (PCB) detecting device and corresponding method
CN103197170A (en) * 2013-03-01 2013-07-10 深圳创维数字技术股份有限公司 Test method, test device, control device and system of voltage stabilizer
CN103926503A (en) * 2014-05-05 2014-07-16 航天科技控股集团股份有限公司 Extensible precise position reporting point connection detecting system
CN104183102A (en) * 2014-07-21 2014-12-03 苏州锟恩电子科技有限公司 Wireless PCB tester
CN105190329A (en) * 2013-03-19 2015-12-23 日本电产理德股份有限公司 Insulation inspection method and insulation inspection apparatus
CN105446823A (en) * 2015-11-10 2016-03-30 杭州古北电子科技有限公司 Test system and method for intelligent product production

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103197170A (en) * 2013-03-01 2013-07-10 深圳创维数字技术股份有限公司 Test method, test device, control device and system of voltage stabilizer
CN105190329B (en) * 2013-03-19 2018-07-31 日本电产理德股份有限公司 Insulation detecting method and insulation detection device
CN105190329A (en) * 2013-03-19 2015-12-23 日本电产理德股份有限公司 Insulation inspection method and insulation inspection apparatus
CN103149527A (en) * 2013-04-02 2013-06-12 精成科技电子(东莞)有限公司 Printed circuit board (PCB) detecting device and corresponding method
CN103926503A (en) * 2014-05-05 2014-07-16 航天科技控股集团股份有限公司 Extensible precise position reporting point connection detecting system
CN104183102A (en) * 2014-07-21 2014-12-03 苏州锟恩电子科技有限公司 Wireless PCB tester
CN105446823A (en) * 2015-11-10 2016-03-30 杭州古北电子科技有限公司 Test system and method for intelligent product production

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GR01 Patent grant
C14 Grant of patent or utility model
CP01 Change in the name or title of a patent holder

Address after: 518000 Guangdong city of Shenzhen province Nanshan District Gao Xin Road Building A14, SKYWORTH

Patentee after: Shenzhen Skyworth Digital Technology Co., Ltd.

Address before: 518000 Guangdong city of Shenzhen province Nanshan District Gao Xin Road Building A14, SKYWORTH

Patentee before: Shenzhen Skyworth Digital Technology Co., Ltd.

C56 Change in the name or address of the patentee

Owner name: SHENZHEN SKYWORTH DIGITAL TECHNOLOGY CO., LTD.

Free format text: FORMER NAME: SKY-WORTH DIGITAL TECHNOLOGY CO., LTD.;SHENZHEN CITY

CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20121226

Termination date: 20180105

CF01 Termination of patent right due to non-payment of annual fee