CN204928795U - Vibration feedback keying circuit , button and door handle switch - Google Patents
Vibration feedback keying circuit , button and door handle switch Download PDFInfo
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- CN204928795U CN204928795U CN201520752865.3U CN201520752865U CN204928795U CN 204928795 U CN204928795 U CN 204928795U CN 201520752865 U CN201520752865 U CN 201520752865U CN 204928795 U CN204928795 U CN 204928795U
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Abstract
The utility model discloses a vibration feedback keying circuit, button and door handle switch, this keying circuit includes: a piezoceramics piece J1, be used for gathering for pressing down the time produce pulse signal pulse signal's signal acquisition circuit, be used for by pulse signal produces interchange pulse signal and feeds back to piezoceramics piece J1 is so that the signal feedback circuit of piezoceramics piece J1 oscillation generation. The technical scheme of the utility model adopt the piezoceramics piece as the button main part, when pressing down, the piezoceramics piece produces the high pressure, gathers through the circuit, then exports a wave form and make the vibration of piezoceramics piece, simulates mechanical button in the thoughts and feelings when pressing, because adoption piezoceramics piece, input/output voltage is higher, so the interference killing feature is very high.
Description
Technical field
The utility model relates to the technical field of flat button, particularly relates to a kind of vibrational feedback key circuit, button and door handle switches.
Background technology
Present flat button is generally condenser type, gathers push button signalling by the change of Detection capacitance amount.When finger is pressed on button, capacitance changes, thus collects push button signalling.But this button antijamming capability is poor, cannot be applied on automobile.
Utility model content
The purpose of this utility model is to propose a kind of vibrational feedback key circuit, button and door handle switches, is intended to solve the object how realizing the high flat button of antijamming capability.
For reaching this object, the utility model by the following technical solutions:
First aspect, a kind of vibrational feedback key circuit, the piezoelectric ceramic piece J1 of pulse signal is produced when comprising for pressing, for gathering the signal acquisition circuit of described pulse signal, described piezoelectric ceramic piece J1 is fed back to make the vibrative signal feedback circuit of piezoelectric ceramic piece J1 for producing pulse signal by described pulse signal, the output of signal acquisition circuit is connected with the input of signal feedback circuit, one end of piezoelectric ceramic piece J1 is connected with the output of signal feedback circuit respectively at the input of signal acquisition circuit, the other end ground connection of piezoelectric ceramic piece J1.
Preferably, described signal feedback circuit comprises by the processor of described pulse signal generation pulse signal and described pulse signal is fed back to described piezoelectric ceramic piece J1 to make the vibrative feedback control circuit of piezoelectric ceramic piece J1.
Preferably, described signal feedback circuit comprises the processor being produced difform pulse signal by described pulse signal.
Preferably, described signal acquisition circuit comprises the first resistance, the second resistance and voltage-stabiliser tube D1, one end of described first resistance is connected with the other end of described piezoelectric ceramic piece J1, the other end of described first resistance is connected with one end of the negative electrode of D1, the second resistance, and the anode of described D1, the other end of the second resistance are connected with signal ground.
Preferably, described feedback control circuit comprises resistance the 3rd resistance, 4th resistance, 5th resistance, triode Q1, Q2, one end of described 5th resistance is connected with described processor, the base stage of Q2 described in the other end of described 5th resistance connects, the emitter of described Q2 is connected with signal ground, the collector electrode of described Q2 is connected with one end of described 3rd resistance, the other end of described 3rd resistance and one end of described 4th resistance, the base stage of described Q1 connects, the other end of described 4th resistance and power end VBAT, the emitter of described Q1 connects, the collector electrode of described Q1 is connected with the other end of described piezoelectric ceramic piece J1.
Second aspect, a kind of button, comprise circuit and key panel that first aspect provides, described piezoelectric ceramic piece J1 is arranged on the below of described key panel.
Preferably, described key panel comprises metal decking or plastic front board.
The third aspect, a kind of door handle switches, described door handle switches comprises the button that second aspect provides.
The utility model provides a kind of vibrational feedback key circuit, button and door handle switches, the piezoelectric ceramic piece J1 of pulse signal is produced when described key circuit comprises for pressing, for gathering the signal acquisition circuit of described pulse signal, described piezoelectric ceramic piece J1 is fed back to make the vibrative signal feedback circuit of piezoelectric ceramic piece J1 for producing pulse signal by described pulse signal, adopt piezoelectric ceramic piece as key main body, when pressing, piezoelectric ceramic piece produces high pressure, gathered by circuit, then exporting a waveform makes piezoelectric ceramic piece vibrate, the thoughts and feelings of analog mechanical button when being pressed, owing to adopting piezoelectric ceramic piece, input and output voltage is higher, so antijamming capability is very high.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of vibrational feedback key circuit that the utility model provides;
Fig. 2 is the structural representation of a kind of signal feedback circuit that the utility model provides;
Fig. 3 be a kind of vibrational feedback key circuit of providing of the utility model structural representation.
Embodiment
The technical solution of the utility model is further illustrated by embodiment below in conjunction with accompanying drawing.
With reference to the structural representation that figure 1, Fig. 1 is a kind of vibrational feedback key circuit that the utility model provides.Vibrational feedback key circuit 101, the piezoelectric ceramic piece J1 of pulse signal is produced when comprising for pressing, for gathering the signal acquisition circuit 102 of described pulse signal, described piezoelectric ceramic piece J1 is fed back to make the vibrative signal feedback circuit 103 of piezoelectric ceramic piece J1 for producing pulse signal by described pulse signal, the output of signal acquisition circuit 102 is connected with the input of signal feedback circuit 103, one end of piezoelectric ceramic piece J1 is connected with the output of signal feedback circuit 103 respectively at the input of signal acquisition circuit 102, the other end ground connection of piezoelectric ceramic piece J1.
Wherein, piezoelectric ceramic piece J1, signal acquisition circuit 102, function performed by signal feedback circuit 103 can be gone to realize by the circuit unit that forms of electronic component.
Concrete, be the structural representation of a kind of signal feedback circuit that the utility model provides with reference to figure 2, Fig. 2.
Described signal feedback circuit 103 comprises by the processor 201 of described pulse signal generation pulse signal and described pulse signal is fed back to described piezoelectric ceramic piece J1 to make the vibrative feedback control circuit 202 of piezoelectric ceramic piece J1.
Preferably, described signal feedback circuit 103 comprises the processor being produced difform pulse signal by described pulse signal.
Wherein, piezoelectric ceramic piezoelectric ceramic piece J1 produces pulse signal after receiving the key command of user's triggering, carries out filtering process, export a pulse signal by processor by processor 201 to described pulse signal.The specific implementation of described processor 201 can, by existing techniques in realizing, namely be all that the circuit unit that can be made up of existing electronic component goes to realize.
Concrete, with reference to figure 3, Fig. 3 be a kind of vibrational feedback key circuit of providing of the utility model structural representation.
Described signal acquisition circuit 102 comprises the first resistance, the second resistance and voltage-stabiliser tube D1, one end of described first resistance is connected with the other end of described piezoelectric ceramic piece J1, the other end of described first resistance is connected with one end of the negative electrode of D1, the second resistance, and the anode of described D1, the other end of the second resistance are connected with signal ground.
Described feedback control circuit 202 comprises resistance the 3rd resistance, 4th resistance, 5th resistance, triode Q1, Q2, one end of described 5th resistance is connected with described processor 201, the base stage of Q2 described in the other end of described 5th resistance connects, the emitter of described Q2 is connected with signal ground, the collector electrode of described Q2 is connected with one end of described 3rd resistance, the other end of described 3rd resistance and one end of described 4th resistance, the base stage of described Q1 connects, the other end of described 4th resistance and power end VBAT, the emitter of described Q1 connects, the collector electrode of described Q1 is connected with the other end of described piezoelectric ceramic piece J1.
Concrete, the utility model adopts piezoelectric ceramic piece J1 as button acquisition component, and it is again as vibrational feedback output block simultaneously.When hand pressing keys, piezoelectric ceramic piece exports because deformation produces voltage, and because output voltage is higher, so adopt voltage-stabiliser tube D1 to carry out pressure limiting, the first resistance is current-limiting resistance.Second resistance is pull down resistor, and when button is not pressed, the voltage on piezoelectric ceramic piece is 0, has antijamming capability.When button is pressed, produce a pulse signal, pulse signal after pressure limiting is gathered by key collection circuit, enters processor, carries out filtering process by processor pulse signals, preprocessor export a pulse signal, control Q2, makes Q1 carry out switch, makes piezoelectric ceramic piece produce vibration, the sense of touch of analog mechanical button carries out vibrational feedback, and people is known, and button is pressed.In Fig. 2, the 5th resistance, the 3rd resistance are current-limiting resistance, and the 4th resistance is pull-up resistor, has antijamming capability.Meanwhile, processor by changing the waveform of pulse signal, can form different senses of touch.
On the other hand, the utility model provides a kind of press-key structure, and comprise circuit and key panel that the utility model embodiment provides, described piezoelectric ceramic piece J1 is arranged on the below of described key panel.Described key panel comprises metal decking or plastic front board.
On the other hand, the utility model provides a kind of door handle switches, and described door handle switches comprises the press-key structure that the utility model embodiment provides.
Concrete, piezoelectric ceramic piece is placed in below key panel, and key panel can adopt metal or plastic or other material, because piezoelectric ceramic piece is arranged on below panel, so hermetically sealed waterproof can be realized, automobile external can well be applied to, as automobile enters the door handle switches of system.
The utility model provides a kind of vibrational feedback key circuit, the piezoelectric ceramic piece J1 of pulse signal is produced when described key circuit comprises for pressing, for gathering the signal acquisition circuit of described pulse signal, described piezoelectric ceramic piece J1 is fed back to make the vibrative signal feedback circuit of piezoelectric ceramic piece J1 for producing pulse signal by described pulse signal, adopt piezoelectric ceramic piece as key main body, when pressing, piezoelectric ceramic piece produces high pressure, gathered by circuit, then exporting a waveform makes piezoelectric ceramic piece vibrate, the thoughts and feelings of analog mechanical button when being pressed, owing to adopting piezoelectric ceramic piece, input and output voltage is higher, so antijamming capability is very high.
Below know-why of the present utility model is described in conjunction with specific embodiments.These describe just in order to explain principle of the present utility model, and can not be interpreted as the restriction to the utility model protection range by any way.Based on explanation herein, those skilled in the art does not need to pay performing creative labour can associate other embodiment of the present utility model, and these modes all will fall within protection range of the present utility model.
Claims (8)
1. a vibrational feedback key circuit, it is characterized in that, the piezoelectric ceramic piece J1 of pulse signal is produced when comprising for pressing, for gathering the signal acquisition circuit of described pulse signal, described piezoelectric ceramic piece J1 is fed back to make the vibrative signal feedback circuit of piezoelectric ceramic piece J1 for producing pulse signal by described pulse signal, the output of signal acquisition circuit is connected with the input of signal feedback circuit, one end of piezoelectric ceramic piece J1 is connected with the output of signal feedback circuit with the input of signal acquisition circuit respectively, the other end ground connection of piezoelectric ceramic piece J1.
2. vibrational feedback key circuit according to claim 1, it is characterized in that, described signal feedback circuit comprises by the processor of described pulse signal generation pulse signal and described pulse signal is fed back to described piezoelectric ceramic piece J1 to make the vibrative feedback control circuit of piezoelectric ceramic piece J1.
3. vibrational feedback key circuit according to claim 2, is characterized in that, described signal feedback circuit comprises the processor being produced difform pulse signal by described pulse signal.
4. vibrational feedback key circuit according to claim 1, it is characterized in that, described signal acquisition circuit comprises the first resistance, the second resistance and voltage-stabiliser tube D1, one end of described first resistance is connected with the other end of described piezoelectric ceramic piece J1, the other end of described first resistance is connected with one end of the negative electrode of D1, the second resistance, and the anode of described D1, the other end of the second resistance are connected with signal ground.
5. vibrational feedback key circuit according to claim 2, it is characterized in that, described feedback control circuit comprises the 3rd resistance, 4th resistance, 5th resistance, triode Q1, Q2, one end of described 5th resistance is connected with described processor, the base stage of Q2 described in the other end of described 5th resistance connects, the emitter of described Q2 is connected with signal ground, the collector electrode of described Q2 is connected with one end of described 3rd resistance, the other end of described 3rd resistance and one end of described 4th resistance, the base stage of described Q1 connects, the other end of described 4th resistance and power end VBAT, the emitter of described Q1 connects, the collector electrode of described Q1 is connected with the other end of described piezoelectric ceramic piece J1.
6. a button, comprises the circuit described in claim 1 to 5 any one and key panel, and described piezoelectric ceramic piece J1 is arranged on the below of described key panel.
7. button according to claim 6, is characterized in that, described key panel comprises metal decking or plastic front board.
8. a door handle switches, is characterized in that, described door handle switches comprises the button described in claim 6 or 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520752865.3U CN204928795U (en) | 2015-09-25 | 2015-09-25 | Vibration feedback keying circuit , button and door handle switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520752865.3U CN204928795U (en) | 2015-09-25 | 2015-09-25 | Vibration feedback keying circuit , button and door handle switch |
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| Publication Number | Publication Date |
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| CN204928795U true CN204928795U (en) | 2015-12-30 |
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| CN201520752865.3U Active CN204928795U (en) | 2015-09-25 | 2015-09-25 | Vibration feedback keying circuit , button and door handle switch |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106301435A (en) * | 2016-08-16 | 2017-01-04 | 深圳天珑无线科技有限公司 | Mobile terminal |
| CN108649945A (en) * | 2018-05-31 | 2018-10-12 | 苏州攀特电陶科技股份有限公司 | A kind of vibratory drive circuit |
| CN110568960A (en) * | 2019-09-04 | 2019-12-13 | 昆山龙朋精密电子有限公司 | Piezoelectric touch feedback device |
-
2015
- 2015-09-25 CN CN201520752865.3U patent/CN204928795U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106301435A (en) * | 2016-08-16 | 2017-01-04 | 深圳天珑无线科技有限公司 | Mobile terminal |
| CN108649945A (en) * | 2018-05-31 | 2018-10-12 | 苏州攀特电陶科技股份有限公司 | A kind of vibratory drive circuit |
| CN110568960A (en) * | 2019-09-04 | 2019-12-13 | 昆山龙朋精密电子有限公司 | Piezoelectric touch feedback device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | "change of name, title or address" | ||
| CP03 | "change of name, title or address" |
Address after: 4 / F, building 1, No.14 Jiuxianqiao Road, Chaoyang District, Beijing 100020 Patentee after: Beijing Jingwei Hengrun Technology Co., Ltd Address before: 100101 Beijing city Chaoyang District Anxiang Beili 11 B block 8 layer of Beijing Jingwei Hengrun Technology Co. Ltd. Patentee before: Beijing Jingwei HiRain Technologies Co.,Ltd. |