CN201477190U - Keying circuit board test device - Google Patents
Keying circuit board test device Download PDFInfo
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- CN201477190U CN201477190U CN2009203085434U CN200920308543U CN201477190U CN 201477190 U CN201477190 U CN 201477190U CN 2009203085434 U CN2009203085434 U CN 2009203085434U CN 200920308543 U CN200920308543 U CN 200920308543U CN 201477190 U CN201477190 U CN 201477190U
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- 238000012360 testing method Methods 0.000 title claims abstract description 27
- 230000003993 interaction Effects 0.000 claims abstract description 10
- 238000011990 functional testing Methods 0.000 abstract description 5
- 238000006243 chemical reaction Methods 0.000 abstract 2
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 230000002950 deficient Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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Abstract
The utility model relates to a keying circuit board test device which is characterized in that the test device comprises an A/D conversion circuit, an MCU (multipoint control unit) and a man-machine interaction module; the output terminal of the A/D conversion circuit is connected with the input terminal of the MCU; and the output terminal of the MCU is connected with the man-machine interaction module. The keying circuit board test device is compatible with the functional test of all voltage output-type keyboards, and achieves the purpose of rapid, safe and cost-efficient test.
Description
Technical field
The utility model relates to the functional test field of the keypad of display and TV, refers to a kind of pick-up unit of voltage output type keypad especially.
Background technology
Button is the main mode of carrying out man-machine interaction between display or TV and the user.In the use of product, operation push-button can allow the user use all functions of product.If button goes wrong, will quality problem such as client's complaint, the return of goods have been brought thus to the greatly puzzlement of use generation of final user to product.And our said button, from the angle of technology, it is actual to be exactly a circuit board that many buttons are arranged, and is referred to as keypad in this programme.Keypad has mainly comprised two functions: one provides button operates to the user, and the 2nd, LED light has been installed has been used to indicate the product current working state.Test keypad function before is to use the complete machine (display or TV) that matches, and directly keypad is connected with complete machine, then operation push-button.In operating process, the operating personnel checks that whether all buttons are corresponding one by one with the function of its definition, judge at last whether keypress function is normal again.
Known technology exists following defective:
1, keypad numerous types, the complete machine that different keypads need match could use.So, need a large amount of complete machines to be used for the keypad test.So many complete machines are wanted personal management, large tracts of land parking space, and cost is higher.
2, in whole test process, owing to will be connected with mainboard, and mainboard interface plug number of times is limited, will damage mainboard after test a period of time, produces extra mainboard maintenance cost thus.
3, operation process is cumbersome, and whether the operating personnel need observe keypress function corresponding.
4, there is operation leakage hidden danger in artificial judgement.
5, need to contact the complete machine inner part in the manually-operated process, have personal security hidden danger.
Therefore develop a kind of realizations fast, safe, proving installation is very important cheaply.
Summary of the invention
For overcoming the deficiency of above-mentioned technology, the purpose of this utility model provides a kind of key circuit board test device, and the functional test that this device can compatible all voltage output type keypads realizes fast, safety, test purpose cheaply.
It is to realize like this, a kind of key circuit board test device, it is characterized in that: comprise A/D change-over circuit, MCU, human-computer interaction module, the output terminal of described A/D change-over circuit links to each other with the input end of MCU, and the output terminal of described MCU is connected with human-computer interaction module.
Usefulness of the present utility model is: 1, the functional test of compatible all voltage output type keypads.2, automatically whether the keypad function is normally judged, avoided because of artificial leakage.3, simple to operate, the operating personnel grasps easily.4, promote testing efficiency, reduce the operating personnel.5, need not other subtest equipment, testing cost is cheap.
Description of drawings
Fig. 1 is the schematic block circuit diagram of the utility model embodiment.
Fig. 2 is the self study process flow diagram of the utility model embodiment.
Fig. 3 is the test flow chart of the utility model embodiment.
Embodiment
Below in conjunction with drawings and Examples the utility model is described further.
As shown in Figure 1, the utility model provides a kind of key circuit board test device, it is characterized in that: comprise A/D change-over circuit, MCU, human-computer interaction module, the output terminal of described A/D change-over circuit links to each other with the input end of MCU, and the output terminal of described MCU is connected with human-computer interaction module.
In preferred embodiment, the mixed-signal system level single-chip microcomputer C8051F350 that the utility model uses Cygnal company to produce, it has carried the A/D of 24 bit of 8 passages, sample rate＞100K/S, inner crystal oscillator, inner sampling reference voltage, outer member is few, design is succinct, and its performance can satisfy the request for utilization of this programme fully.
When detecting, at first provide one through detecting standard compliant button circuit board, utilize described A/D change-over circuit to gather the output end voltage of this button circuit board; Follow described MCU and under the self study state, gather each button output voltage, the line item of going forward side by side; Subsequently the output terminal of button circuit board to be measured is inserted the input end of A/D change-over circuit; Described MCU gathers each button output voltage under test mode, and compares with the normal voltage of above-mentioned record; Relatively,,, then be judged as defective products if voltage does not match if voltage matches then is judged as certified products.Idiographic flow as shown in Figures 2 and 3.
The keypad voltage output end of standard is connected to this device A/D sampling end by wire rod, before test, need carry out " study " to it.
" study " function is to guarantee that the utility model is to all compatible significant capability of all voltage output type keypads, " study " is meant: before test, it is consistent with keypad to be measured to get a slice, and through confirming the keypad print of OK, and setting device is " study " state, subsequently successively to button operation one time, in operating process, this device is the voltage status during the each button operation of record automatically.When voltage not simultaneously, the corresponding key difference then writes down this state and numbers for button.After finishing " study ", setting device is " test " state again, insert not keypad again through testing, when a button is operated, the keypad output voltage, whether device inquiry has with voltage of " study " mistake is complementary and determines which button is being operated, if the voltage of coupling is arranged, think that then the keypress function of corresponding numbering is normal, when all buttons all pass through operation and mate fully with voltage that " study " crosses, the automatic judgement of this device PASS then.When occurring the voltage that can't mate, then judge defective products NG automatically if all buttons all pass through operation.
The utility model has been realized the functional test of free voltage output type keypad.Voltage output type keypad by the some voltages of outside output, is judged key-press status so that its output voltage can be discerned in the outside when operation push-button.Based on this characteristic, the keypad test that the utility model can compatible all this kind principle of work, and irrelevant with the concrete form of keypad.
The above only is preferred embodiment of the present utility model, and all equalizations of being done according to the utility model claim change and modify, and all should belong to covering scope of the present utility model.
Claims (4)
1. key circuit board test device, it is characterized in that: comprise A/D change-over circuit, MCU, human-computer interaction module, the output terminal of described A/D change-over circuit links to each other with the input end of MCU, and the output terminal of described MCU is connected with human-computer interaction module.
2. key circuit board test device according to claim 1 is characterized in that: described MCU is a single chip control module.
3. key circuit board test device according to claim 2 is characterized in that: the model of described single-chip microcomputer is C8051F350.
4. key circuit board test device according to claim 1 is characterized in that: described human-computer interaction module comprises that screen shows and keyboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203085434U CN201477190U (en) | 2009-08-22 | 2009-08-22 | Keying circuit board test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203085434U CN201477190U (en) | 2009-08-22 | 2009-08-22 | Keying circuit board test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201477190U true CN201477190U (en) | 2010-05-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203085434U Expired - Fee Related CN201477190U (en) | 2009-08-22 | 2009-08-22 | Keying circuit board test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201477190U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102565692A (en) * | 2011-12-26 | 2012-07-11 | 江苏惠通集团有限责任公司 | Touch key detection device |
| TWI416135B (en) * | 2010-11-26 | 2013-11-21 | Primax Electronics Ltd | Testing method and system for circuit board of keys |
| CN104459530A (en) * | 2014-12-22 | 2015-03-25 | 广州创维平面显示科技有限公司 | Keying board tester and keying board test device |
| CN105486940A (en) * | 2014-09-17 | 2016-04-13 | 深圳Tcl数字技术有限公司 | Key detection circuit and key detection method of electronic equipment |
-
2009
- 2009-08-22 CN CN2009203085434U patent/CN201477190U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI416135B (en) * | 2010-11-26 | 2013-11-21 | Primax Electronics Ltd | Testing method and system for circuit board of keys |
| CN102565692A (en) * | 2011-12-26 | 2012-07-11 | 江苏惠通集团有限责任公司 | Touch key detection device |
| CN105486940A (en) * | 2014-09-17 | 2016-04-13 | 深圳Tcl数字技术有限公司 | Key detection circuit and key detection method of electronic equipment |
| CN105486940B (en) * | 2014-09-17 | 2018-07-13 | 深圳Tcl数字技术有限公司 | Key detection circuit and key detection method of electronic equipment |
| CN104459530A (en) * | 2014-12-22 | 2015-03-25 | 广州创维平面显示科技有限公司 | Keying board tester and keying board test device |
| CN104459530B (en) * | 2014-12-22 | 2018-02-16 | 广州创维平面显示科技有限公司 | Keying panel tester and key-controlled board measuring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100519 Termination date: 20150822 |
|
| EXPY | Termination of patent right or utility model |