CN202939280U - Thin film switch tester - Google Patents
Thin film switch tester Download PDFInfo
- Publication number
- CN202939280U CN202939280U CN 201220496873 CN201220496873U CN202939280U CN 202939280 U CN202939280 U CN 202939280U CN 201220496873 CN201220496873 CN 201220496873 CN 201220496873 U CN201220496873 U CN 201220496873U CN 202939280 U CN202939280 U CN 202939280U
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- chip microcomputer
- thin film
- film switch
- module
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Abstract
The utility model relates to a thin film switch tester which is characterized in that the thin film switch tester comprises a single chip microcomputer, a touch sensitive module, a test socket, an LED display array, a programming interface module and a power supply interface module; an output end of the touch sensitive module is connected with an input end of the single chip microcomputer; an input end of the touch sensitive module is connected with an output end of the test socket; an input end of the LED display array is connected with an output end of the single chip microcomputer; an output end of the programming interface module is connected with the input end of the single chip microcomputer; and the power supply interface module is connected with a power supply wiring terminal of the single chip microcomputer. The thin film switch tester can be taken as a test instrument used by all kinds of professional capacitive thin film switch manufacturers and thin film switch research and manufacture units in the processes of production, research and manufacture, the thin film switch tester has the advantages of speciality and particularity, compact structure, small size and stable operation of a circuit, and the thin film switch tester is suitable for various types of production, research and manufacture occasions.
Description
Technical field
The utility model belongs to switch Test and control field, particularly a kind of thin film switch tester.
Background technology
In automatic-detection control field, the touch sensible technology is very important a special kind of skill, is now used widely, and comparatively popular touching technique mainly is divided into Four types at present: resistance-type, capacitor induction type, infrared-type and surface acoustic wave type.The most frequently used in industrial circle is resistive touch mode and capacitance touch mode.
The resistive touch technology is to utilize the two-layer transparency conducting layer be coated between superficial layer and basic unit-ITO(nano indium tin metal oxide), when touching the pressure that produces, this two conductive layer is connected, when pressing different points, this point is also just different to the resistance value of output terminal, therefore can export the voltage signal corresponding with this position (analog quantity), by obtaining the coordinate figure of X, Y after the A/D conversion.The benefit of resistive touch technology is low price, be easy to produce, but the easier brittle failure of ITO coating because using, and the light transmission of screen and sharpness relatively poor, easily be scratched, precision is lower and serviceable life is not long.
Capacitance touch technology is to point by human body the electric charge that brings to move, because finger can siphon away a very little electric current in mobile process, the current value that different key positions siphons away is different, controller calculates by the precision to different current ratios, can draw contacting points position, thereby realize keypress function.Capacitance type touch key does not need the mechanical contact of conventional keys, the direct contact metal film of human body when not re-using traditional metal yet and touching and the potential safety hazard brought and use limitation.Capacitance type touch key has reliability and durability, and fashion attractive in appearance is convenient to produce and is installed and safeguard, is progressively replacing traditional mechanical button key and metal touching key.Yet, when needing to test in a large number in large-scale production touch key-press process, the triggering that can run into is disturbed large, and the test difficulty waits some problems, can not judge accurately that button touches the correspondence position by point, also can't point out the user to survey quality and the effect of corresponding point button contact condition.
The utility model content
The purpose of this utility model is to overcome the defective that prior art exists, provide a kind of and can judge accurately that button touches the correspondence position by point, point out the user to be surveyed the thin film switch tester of quality and the effect of corresponding point button contact condition with LED demonstration and buzzer warning simultaneously.
The technical scheme that realizes the utility model purpose is: a kind of thin film switch tester comprises single-chip microcomputer, touch sensible module, test jack, LED array of display, DLL (dynamic link library) module and power supply interface module; The output terminal of described touch sensible module connects the input end of single-chip microcomputer, the output terminal of the input termination test jack of touch sensible module; The input end of described LED array of display connects the output terminal of single-chip microcomputer; The output terminal of described DLL (dynamic link library) module connects the input end of single-chip microcomputer; Described power supply interface module is connected with the supply terminals of single-chip microcomputer.
Technique scheme also comprises buzzer drive circuit; The input end of described buzzer drive circuit connects the output terminal of single-chip microcomputer, and buzzer drive circuit comprises hummer driving tube and hummer; The base stage of described hummer driving tube connects current-limiting resistance, and collector connects the negative pole of hummer, grounded emitter; The positive pole of described hummer connects power supply by the power supply current-limiting resistance.
Technique scheme also comprises low-level reset circuit; Described low-level reset circuit is connected on the resetting pin of single-chip microcomputer, and low-level reset circuit comprises anti-interference resistance.
Technique scheme also comprises crystal oscillating circuit; Described crystal oscillating circuit comprises crystal resonator, resistance and electric capacity; The oscillation frequency of described crystal resonator is 3.57954MHz.
The external sensitivity electric capacity of the electric capacity digital conversion pin of the described touch sensible module of technique scheme.
The described touch sensible module of technique scheme is the capacitive touch induction module of 12 passage band self-correcting functions.
The described single-chip microcomputer of technique scheme is AT90S8515.
After adopting technique scheme, the utility model comprises following positive effect:
When (1) the utility model purpose is to utilize capacitance touch technology to need to test in a large number in large-scale production touch key-press process, the triggering that runs into is disturbed large, the test difficulty waits some problems to propose, it can judge accurately that button touches the correspondence position by point, points out the user to be surveyed quality and the effect of corresponding point button contact condition with LED demonstration and buzzer warning simultaneously.Adopt the dedicated touch-sensitive module, with the capacitance variations of average capacitance value as the benchmaring induction point, come the variation of inductance capacitance by any non-conductive medium, have ultralow current-mode, power consumption is little, triggering precision is high, antijamming capability is strong.
(2) the external sensitivity electric capacity of the electric capacity digital conversion pin of touch sensible module of the present utility model; Can pass through to change the value of sensitivity electric capacity, thereby regulate sensitivity of the present utility model.
(3) touch sensible module of the present utility model is the capacitive touch induction module of 12 passage band self-correcting functions; It is with the capacitance variations of average capacitance value as the benchmaring induction point, can come by any non-conductive medium the variation (button touch) of inductance capacitance, it has the consistance of good anti-interference and performance, gather four BCD coded signals of this module output by single-chip microcomputer, also can directly communicate by interface circuit and single-chip microcomputer.
(4) the utility model can be used as all kinds of professional capacitive films switch manufacturers and thin film switch research institute produce and development process in, use as testing tool, it has professional and singularity, and compact conformation, volume is small and exquisite, circuit working is stable, is suitable for all kinds of productions and the use of development occasion.
Description of drawings
Content of the present utility model is easier to be expressly understood in order to make, and the below is described in further detail the utility model, wherein according to specific embodiment also by reference to the accompanying drawings
Fig. 1 is system architecture diagram of the present utility model;
1. single-chip microcomputers in figure, 2. touch sensible module, 3. test jack, 4.LED array of display, 5. DLL (dynamic link library) module, 6. power supply interface module, 7. buzzer drive circuit, 8. low-level reset circuit, 9. crystal oscillating circuit.
Embodiment
(embodiment 1)
See Fig. 1, the utility model comprises single-chip microcomputer 1, touch sensible module 2, test jack 3, LED array of display 4, DLL (dynamic link library) module 5, power supply interface module 6, buzzer drive circuit 7, low-level reset circuit 8 and crystal oscillating circuit 9; The output terminal of touch sensible module 2 connects the input end of single-chip microcomputer 1, the output terminal of the input termination test jack 3 of touch sensible module 2; The input end of LED array of display 4 connects the output terminal of single-chip microcomputer 1; The output terminal of DLL (dynamic link library) module 5 connects the input end of single-chip microcomputer 1; Power supply interface module 6 is connected with the supply terminals of single-chip microcomputer 1.
Single-chip microcomputer 1 is AT90S8515, and 38 and 29 pin of single-chip microcomputer 1 connect power supply, and the two ends of power filtering capacitor connect respectively the VDD-to-VSS line; Low-level reset circuit 8 is connected on 4 pin of single-chip microcomputer 1, and low-level reset circuit 8 comprises anti-interference resistance.The input end of buzzer drive circuit 7 connects 18 pin of single-chip microcomputer 1, and buzzer drive circuit 7 comprises hummer driving tube and hummer; The base stage of hummer driving tube connects current-limiting resistance, and collector connects the negative pole of hummer, grounded emitter; The positive pole of hummer connects power supply by the power supply current-limiting resistance.Crystal oscillating circuit 9 connects 14,15 pin of single-chip microcomputer 1, and crystal oscillating circuit 9 comprises crystal resonator, resistance and electric capacity; The oscillation frequency of crystal resonator is 3.57954MHz; 16 pin ground connection of single-chip microcomputer 1,5 pin and 7 pin connect DLL (dynamic link library), and 12 pin contact 22 pin and 21 pin of touching induction module 2 with 13 pin, and 44 pin of single-chip microcomputer 1,1 pin, 2 pin and 3 pin contact respectively 19 pin, 18 pin, 17 pin and 16 pin of touching induction module 2; 30-37 pin, the 40-43 pin of single-chip microcomputer 1 connect respectively LED array of display 4; When single-chip microcomputer 1 control end output electronegative potential, that road on corresponding LED array of display 4 is conducting, and the LED diode is namely lighted; 19 pin of single-chip microcomputer 1 connect the power LED pilot lamp.
It is capacitive touch induction modules of 12 passage band self-correcting functions that sense of touch is answered module 2, the external sensitivity electric capacity of the electric capacity digital conversion pin of touch sensible module 2; 24 pin of touch sensible module 2 connect power supply and power filtering capacitor; The 2 external mutual capacitances of pin, the 3 external sensitivity electric capacity of pin, the value of change sensitivity electric capacity can be regulated the sensitivity of tester; The 4-15 pin of touch sensible module 2 connects the test jack module, 1 pin and 20 pin ground connection, and 21 pin and 22 pin connect respectively 12 pin and 13 pin of single-chip microcomputer 1, and 22 pin are connected to pull-up resistor.
Above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; institute is understood that; the above is only specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any modification of making, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (7)
1. a thin film switch tester, is characterized in that: comprise single-chip microcomputer (1), touch sensible module (2), test jack (3), LED array of display (4), DLL (dynamic link library) module (5) and power supply interface module (6); The output terminal of described touch sensible module (2) connects the input end of single-chip microcomputer (1), the output terminal of the input termination test jack (3) of touch sensible module (2); The input end of described LED array of display (4) connects the output terminal of single-chip microcomputer (1); The output terminal of described DLL (dynamic link library) module (5) connects the input end of single-chip microcomputer (1); Described power supply interface module (6) is connected with the supply terminals of single-chip microcomputer (1).
2. thin film switch tester according to claim 1, is characterized in that: also comprise buzzer drive circuit (7); The input end of described buzzer drive circuit (7) connects the output terminal of single-chip microcomputer (1), and buzzer drive circuit (7) comprises hummer driving tube and hummer; The base stage of described hummer driving tube connects current-limiting resistance, and collector connects the negative pole of hummer, grounded emitter; The positive pole of described hummer connects power supply by the power supply current-limiting resistance.
3. thin film switch tester according to claim 2, is characterized in that: also comprise low-level reset circuit (8); Described low-level reset circuit (8) is connected on the resetting pin of single-chip microcomputer (1), and low-level reset circuit (8) comprises anti-interference resistance.
4. thin film switch tester according to claim 3, is characterized in that: also comprise crystal oscillating circuit (9); Described crystal oscillating circuit (9) comprises crystal resonator, resistance and electric capacity; The oscillation frequency of described crystal resonator is 3.57954MHz.
5. thin film switch tester according to claim 4, is characterized in that: the external sensitivity electric capacity of the electric capacity digital conversion pin of described touch sensible module (2).
According to claim 1 to 5 arbitrary described thin film switch tester, it is characterized in that: described touch sensible module (2) is the capacitive touch induction module of 12 passage band self-correcting functions.
7. thin film switch tester according to claim 6, it is characterized in that: described single-chip microcomputer (1) is AT90S8515.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220496873 CN202939280U (en) | 2012-09-26 | 2012-09-26 | Thin film switch tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220496873 CN202939280U (en) | 2012-09-26 | 2012-09-26 | Thin film switch tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202939280U true CN202939280U (en) | 2013-05-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220496873 Expired - Fee Related CN202939280U (en) | 2012-09-26 | 2012-09-26 | Thin film switch tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202939280U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103412256A (en) * | 2013-08-12 | 2013-11-27 | 昆山金利表面材料应用科技股份有限公司 | Membrane switch AOI detector and membrane switch AOI detection method |
| CN105093098A (en) * | 2014-05-16 | 2015-11-25 | 致伸科技股份有限公司 | Test system of membrane switch circuit |
| CN105372588A (en) * | 2015-11-27 | 2016-03-02 | 国家电网公司 | High-voltage switch state monitoring system and data storage system |
-
2012
- 2012-09-26 CN CN 201220496873 patent/CN202939280U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103412256A (en) * | 2013-08-12 | 2013-11-27 | 昆山金利表面材料应用科技股份有限公司 | Membrane switch AOI detector and membrane switch AOI detection method |
| CN103412256B (en) * | 2013-08-12 | 2016-05-18 | 昆山峰实电子科技有限公司 | A kind of thin film switch AOI detector and AOI detection method thereof |
| CN105093098A (en) * | 2014-05-16 | 2015-11-25 | 致伸科技股份有限公司 | Test system of membrane switch circuit |
| CN105093098B (en) * | 2014-05-16 | 2018-06-12 | 致伸科技股份有限公司 | Test system of membrane switch circuit |
| CN105372588A (en) * | 2015-11-27 | 2016-03-02 | 国家电网公司 | High-voltage switch state monitoring system and data storage system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130515 Termination date: 20130926 |