CN201434766Y - Feedback button life-span tester - Google Patents
Feedback button life-span tester Download PDFInfo
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- CN201434766Y CN201434766Y CN2009200938045U CN200920093804U CN201434766Y CN 201434766 Y CN201434766 Y CN 201434766Y CN 2009200938045 U CN2009200938045 U CN 2009200938045U CN 200920093804 U CN200920093804 U CN 200920093804U CN 201434766 Y CN201434766 Y CN 201434766Y
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Abstract
The utility model discloses a feedback button life-span tester, which comprises an ECU and an electric execution unit with impact actions, and is characterized in that an impact pressure feedback circuit provided with a pressure sensor and a contact resistance feedback circuit are further included. An input feedback control circuit is formed by the ECU, the impact pressure feedback circuit, the contact resistance feedback circuit and wire connection terminals of a tested button; and an output feedback control circuit is formed by the ECU, the electric execution unit and the wire connection terminals of the tested button. The feedback button life-span tester has the advantages of small volume, simple structure, low cost, as well as high stability, repeatability and reproducibility, and canovercome the defects of the prior testing device such as simple testing data, no feedback, subjective judgment, etc.
Description
Technical field
The utility model belongs to electronic devices and components detection technique field, and a kind of feedback type keystroke life test machine is provided, and is specially adapted to the push button longevity qualification test.
Background technology
The keystroke life test device is the indispensable equipment to the button quality monitoring, and fault of construction should not appear in tested button after the keystroke life test neutralization test, electric property descends.
Existing known keystroke life test device adopts the tested button of rubber contact simulation finger stroke, to detect the click life-span of switchgears such as button, switch, thin film switch, keyboard, contact panel.The keystroke life test device only keeps producing continual and steady stroke, can not under the button abnormal conditions, write down and effectively impact number of times, can not write down the force value and the button contact resistance value of tested button in the process of the test, can't make test tolerance unusually to the button that impacts in the button process, do not possess the FEEDBACK CONTROL ability, the data of keystroke life test are simple, and there are more subjective judgement in process of the test and conclusion.
Test unit and method should possess metrizability, stability, repeatability and repeatability.Present button test unit and method can not satisfy such requirement.
Summary of the invention
The utility model discloses a kind of feedback type keystroke life test machine, can't make test tolerance unusually to the button that impacts in the button process with keystroke life test in the solution prior art, do not possess the FEEDBACK CONTROL ability, the data of keystroke life test are simple, and there are problems such as subjective judgement in process of the test and conclusion.
The utility model feedback type keystroke life test device comprises it is characterized in that the electric performance element of single-chip computer control system ECU, stroke: also comprise impacting pressure feedback circuit, contact resistance feedback circuit.
Impact the pressure feedback circuit and comprise pressure transducer; The SIGN pin of pressure transducer is connected with the RA0 terminal of single-chip computer control system ECU; The contact resistance feedback circuit comprises constant voltage reference source, resistance and is connected the connection end of tested button; Resistance one end is connected with the RA1 terminal of single-chip computer control system ECU, an end ground connection; Connection end one end that connects tested button is connected with the RA1 terminal of single-chip computer control system ECU, and an end is connected with the Vout pin of constant voltage reference source; Single-chip computer control system ECU, impact pressure feedback circuit, contact resistance feedback circuit, the connection end that connects tested button constitutes the input feedback control circuit.
Single-chip computer control system ECU and electric performance element, be connected tested button connection end electric signal and connect; The connection end of single-chip computer control system ECU, electric performance element, the tested button of connection constitutes the output feedback control circuit.
The utility model feedback type keystroke life test device, electric performance element comprises field effect transistor, adjustable constant-flow source and electromagnet; Two terminals of electromagnet connect the drain D of field effect transistor and the Vout terminal in adjustable constant-flow source respectively; ECU controls the conducting and the shutoff of electromagnet by the grid G of RC0 terminal connection field effect transistor, and ECU adjusts the output current in adjustable constant-flow source by the D/A modular converter of RA2 terminal.
The utility model feedback type keystroke life test device also comprises data storage circuitry and man-machine interaction unit; Data storage circuitry is connected with RC2 ~ RC5 terminal of ECU, by the bus Data transmission; Man-machine interaction unit comprises keyboard matrix and display module; The keyboard matrix terminal is connected with RB0 ~ RD3 terminal of ECU; The DB0 of display module ~ DB7 terminal is connected with RD0 ~ RD7 terminal of ECU, realizes the demonstration of feedback type keystroke life test device experiment information.
Key press value of gathering in the utility model process of the test and button contact resistance value be as the input information of FEEDBACK CONTROL, feedback type keystroke life test, and volume is little, simple in structure, cost is low.Shortcomings such as the test figure that has overcome existing keystroke life test device is simple, nothing feedback, subjective judgement.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the utility model circuit theory diagrams.
Among the figure: 1 impacts the pressure feedback circuit; 2 contact resistance feedback circuits; The electric performance element of 3 stroke; 4 single-chip computer control system ECU; 5 data storage circuitries; 6 man-machine interaction units; 7 tested buttons; The 1a pressure transducer; 2a constant voltage reference source; 2b resistance; 3a adjustable constant-flow source; The 3b electromagnet; The 3c field effect transistor; The 5a memory module; The 6a keyboard matrix; The 6b display module; 7a, 7b connect the connection end of tested button.
Embodiment
Following is an embodiment of the present utility model.
As shown in Figure 1, a kind of feedback type keystroke life test device of the utility model comprises the electric performance element 3, single-chip computer control system ECU 4, data storage circuitry 5, the man-machine interaction unit 6 that impact pressure feedback circuit 1, contact resistance feedback circuit 2, stroke; Impact pressure feedback circuit 1 and be connected single-chip computer control system ECU 4, will give single-chip computer control system ECU 4, constitute the feedback signal input circuit tested button resistance and pressure signal transmission with contact resistance feedback circuit 2 difference electric signal; Single-chip computer control system ECU 4 is connected with electric performance element 3 electric signal of stroke, constitutes the feedback signal output circuit, from realizing the adjustment of electricity to tested button impact force; Data storage circuitry 5, man-machine interaction unit 6 electric signal respectively connects single-chip computer control system ECU 4, realizes setting button and impacts that pressure, keying frequency, button finish number of times, button impacts parameters such as pressure limit, button contact resistance value scope and transmits to single-chip computer control system ECU4 electric signal.
As shown in Figure 2: impact pressure feedback circuit 1 and comprise ELW pressure transducer 1a, the SIGN pin of ELW pressure transducer 1a is connected with the RA0 terminal of single-chip computer control system ECU 4, changes at the inner A/D of realization of ECU, and is scaled force value; Impact pressure feedback circuit 1 detection in real time and feedback and impact pressure.
Contact resistance feedback circuit 2 comprises S1112 constant voltage reference source 2a, 100 Ohmage 2b and the connection end 7a and the 7b that are connected tested button 7; 100 Ohmage 2b, one end is connected with the RA1 terminal of single-chip computer control system ECU 4, an end ground connection; The connection end 7b end that connects tested button 7 is connected with the RA1 terminal of single-chip computer control system ECU 4, and the 7a end is connected with the Vout pin of S1112 constant voltage reference source 2a; During test, the two ends of tested button 7 resistance Rkey meet the connection end 7a and the 7b of tested button 7 respectively in succession; A/D by ECU inside is converted to magnitude of voltage, and is scaled resistance value, and the contact resistance feedback circuit detects and feed back the contact resistance value of tested button 7 in real time; The measuring accuracy of contact resistance can reach 0.01 ohm.
Single-chip computer control system ECU 4, the connection end 7a that impacts pressure feedback circuit 1, contact resistance feedback circuit 2, the tested button 7 of connection and 7b constitute the input feedback control circuit.
The electric performance element 3 of stroke is made up of adjustable constant-flow source 3a, electromagnet 3b and STP4NK60Z field effect transistor 3c; Single-chip computer control system ECU4 and electric performance element, the connection end 7a that is connected tested button 7 are connected with the 7b electric signal; Single-chip computer control system ECU4, electric performance element 3, the connection end 7a that connects tested button 7 and 7b constitute the output feedback control circuit.Two terminals of the electromagnet 3b of electric performance element 3 connect the drain D of STP4NK60Z field effect transistor 3c and the Vout terminal of adjustable constant-flow source 3a respectively; Single-chip computer control system ECU 4 connects the grid G of STP4NK60Z field effect transistor 3c by the RC0 terminal, conducting and the shutoff of control electromagnet 3b, single-chip computer control system ECU 4 is by the D/A modular converter of RA2 terminal, adjust the output current of adjustable constant-flow source 3a, thereby realize the adjustment of electromagnet 3b impact force; Electric performance element 3 is guaranteed the pressure stability in the button process, carries out stroke.
Man-machine interaction unit 6 comprises KEY Matrix keyboard matrix 6a, LCD12232 LCD MODULE 6b and communication interface with pc; KEY Matrix keyboard matrix 6a terminal is connected with RB0 ~ RD3 terminal of single-chip computer control system ECU4; The DB0 of LCD12232 LCD MODULE 6b ~ DB7 terminal is connected with RD0 ~ RD7 terminal of single-chip computer control system ECU 4, carries out the demonstration of feedback type keystroke life test device experiment information, realizes human-computer interaction function.
The utility model feedback type keystroke life test method is set button by KEY Matrix keyboard matrix 6a and LCD12232 LCD MODULE 6b and is impacted that pressure, keying frequency, button finish number of times, button impacts parameters such as pressure limit, button contact resistance value scope; By the D/A module of single-chip computer control system ECU 4, through the analog input terminal Vin of the RA2 of ECU 4 port output analog voltage to adjustable constant-flow source 3a, adjustable constant-flow source 3a produces stable output current thus; According to the setpoint frequency cycle, the RC0 terminal of ECU 4 produces control signal control electromagnet 3b and impacts tested button 7; Tested button 7 resistance Rkey are converted to magnitude of voltage, and are scaled resistance value by ECU 4 inner A/D modular converters, calculate the contact resistance of tested button 7; ELW pressure transducer 1a acquired signal exports ECU4 to, at the ECU 4 inner A/D modular converters of realizing, is scaled force value, calculates the pressure that impacts of tested button 7; Tested button 7 force value of gathering in the process of the test and tested button 7 contact resistance value are as the input information of FEEDBACK CONTROL; Two terminals of electromagnet 3b connect the drain D of STP4NK60Z field effect transistor 3c and the Vout terminal of adjustable constant-flow source 3a respectively; ECU 4 is by the grid G of RC0 terminal control STP4NK60Z field effect transistor 3c, realize conducting and the shutoff of electromagnet 3b, ECU 4 is by the D/A modular converter of RA2, adjust the output current of adjustable constant-flow source 3a, thereby realize the adjustment of electromagnet 3b impact force, adopt current constant mode control electromagnet 3b to produce stable impact force.
Less because of contact resistance, when the A/D modular converter by ECU 4 calculates the contact resistance of tested button 7, get rid of the resistance that connects lead.
Information in the process of the test shows in real time by LCD12232 LCD MODULE 6b.
The utility model embodiment foregoing circuit is installed on the platform of basic machine, adopts current constant mode control electromagnet 3b to produce stable impact force; Single-chip computer control system ECU 4 has realized the Based Intelligent Control of process of the test, accurately sets and impacts frequency; Impact key press value that pressure feedback circuit 1 and contact resistance feedback circuit 2 gather and button contact resistance value input information in the process of the test, realize the purpose of FEEDBACK CONTROL as FEEDBACK CONTROL; Data storage circuitry 5 has been realized the pressure of each button and the memory function of contact resistance data; The omnidistance record of test figure, and pass to host computer by serial communication and handle, pilot lamp and sound are warned simultaneously during abnormality; Conclusion (of pressure testing) intuitively shows; The utility model feedback type keystroke life test apparatus and method possess very high stability, Repeatability and Reproducibility.
Claims (4)
1, a kind of feedback type keystroke life test machine comprises it is characterized in that the electric performance element of single-chip computer control system ECU, stroke: also comprise impacting pressure feedback circuit, contact resistance feedback circuit; Impact the pressure feedback circuit and be connected single-chip computer control system ECU, constitute the feedback signal input control circuit with contact resistance feedback circuit difference electric signal; Single-chip computer control system ECU is connected with the electric performance element electric signal of stroke, constitutes the feedback signal output control circuit.
2, feedback type keystroke life test machine according to claim 1 is characterized in that: impact the pressure feedback circuit and comprise pressure transducer; The SIGN pin of pressure transducer is connected with the RA0 terminal of single-chip computer control system ECU; The contact resistance feedback circuit comprises constant voltage reference source, resistance and is connected the connection end of tested button; Resistance one end is connected with the RA1 terminal of single-chip computer control system ECU, an end ground connection; Connection end one end that connects tested button is connected with the RA1 terminal of single-chip computer control system ECU, and an end is connected with the Vout pin of constant voltage reference source; Single-chip computer control system ECU, impact pressure feedback circuit, contact resistance feedback circuit, the connection end that connects tested button constitutes the feedback signal input control circuit; Single-chip computer control system ECU and electric performance element, the connection end electric signal that is connected tested button connect; The connection end of single-chip computer control system ECU, electric performance element, the tested button of connection constitutes the feedback signal output control circuit.
3, feedback type keystroke life test machine according to claim 1, it is characterized in that: electric performance element comprises field effect transistor, adjustable constant-flow source and electromagnet; Two terminals of electromagnet connect the drain D of field effect transistor and the Vout terminal in adjustable constant-flow source respectively; ECU controls the conducting and the shutoff of electromagnet by the grid G of RC0 terminal connection field effect transistor, and ECU adjusts the output current in adjustable constant-flow source by the D/A modular converter of RA2 terminal.
4, feedback type keystroke life test machine according to claim 1 and 2 is characterized in that: also comprise data storage circuitry and man-machine interaction unit; Data storage circuitry is connected with RC2 ~ RC5 terminal of ECU, by the bus Data transmission; Man-machine interaction unit comprises keyboard matrix and display module; The keyboard matrix terminal is connected with RB0 ~ RD3 terminal of ECU; The DB0 of display module ~ DB7 terminal is connected with RD0 ~ RD7 terminal of ECU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200938045U CN201434766Y (en) | 2009-06-12 | 2009-06-12 | Feedback button life-span tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200938045U CN201434766Y (en) | 2009-06-12 | 2009-06-12 | Feedback button life-span tester |
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| Publication Number | Publication Date |
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| CN201434766Y true CN201434766Y (en) | 2010-03-31 |
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| CN2009200938045U Expired - Fee Related CN201434766Y (en) | 2009-06-12 | 2009-06-12 | Feedback button life-span tester |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101576605B (en) * | 2009-06-12 | 2012-06-27 | 启明信息技术股份有限公司 | Feedback type keystroke life test method and device |
| CN102645631A (en) * | 2012-04-28 | 2012-08-22 | 吉林大学 | Automobile key switch testing system and testing method |
| CN106706296A (en) * | 2017-01-06 | 2017-05-24 | 上海瀚海检测技术股份有限公司 | Method for detecting fatigue hand-feeling of key |
-
2009
- 2009-06-12 CN CN2009200938045U patent/CN201434766Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101576605B (en) * | 2009-06-12 | 2012-06-27 | 启明信息技术股份有限公司 | Feedback type keystroke life test method and device |
| CN102645631A (en) * | 2012-04-28 | 2012-08-22 | 吉林大学 | Automobile key switch testing system and testing method |
| CN106706296A (en) * | 2017-01-06 | 2017-05-24 | 上海瀚海检测技术股份有限公司 | Method for detecting fatigue hand-feeling of key |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: QIMING INFORMATION TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: CHANGCHUN QIMING VEHICLE ELECTRONIC CO., LTD. Effective date: 20110317 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 130033 NO. 2489, DONGFENG STREET, CHANGCHUN CITY, JILIN PROVINCE TO: 130012NO. 2489, DONGFENG STREET, CHANGCHUN CITY |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110317 Address after: 130012 No. 2489 Dongfeng Avenue, Changchun Patentee after: Qiming Information Technology Co., Ltd. Address before: 130033 No. 2489 Dongfeng Avenue, Jilin, Changchun Patentee before: Changchun Qiming Vehicle Electronic Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100331 Termination date: 20110612 |