CN201344803Y - Panel mounting digital display instrument adopting capacitance touch induced keys - Google Patents
Panel mounting digital display instrument adopting capacitance touch induced keys Download PDFInfo
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- CN201344803Y CN201344803Y CNU2008201564694U CN200820156469U CN201344803Y CN 201344803 Y CN201344803 Y CN 201344803Y CN U2008201564694 U CNU2008201564694 U CN U2008201564694U CN 200820156469 U CN200820156469 U CN 200820156469U CN 201344803 Y CN201344803 Y CN 201344803Y
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- 239000004020 conductor Substances 0.000 claims abstract description 29
- 230000006698 induction Effects 0.000 claims abstract description 24
- 239000003990 capacitor Substances 0.000 claims description 27
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 239000011889 copper foil Substances 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 8
- 230000009471 action Effects 0.000 abstract description 7
- 230000008859 change Effects 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 abstract description 2
- 238000004891 communication Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000004880 explosion Methods 0.000 description 4
- 235000014676 Phragmites communis Nutrition 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 244000273256 Phragmites communis Species 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- 230000009849 deactivation Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 239000008186 active pharmaceutical agent Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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Abstract
The utility model provides a panel mounting digital display instrument adopting capacitance touch induced keys, which comprises a housing, a power supply, a display device, a connecting terminal device, a main-control module and a touch induced keyboard, wherein, the housing comprises the display device and the connecting terminal device; the touch keyboard is used for achieving the key-pressing action by using fingers to approach or touch corresponding keys, and is connected with the main-control module; the touch induced keyboard further comprises an induction unit and a detection unit; the induction unit is used for reacting the key-pressing action through the change of the capacitance, and comprises a touch induced electric conductor and a conductive plate; a clearance is formed between the touch induced electric conductor and the conductive plate; and the detection unit is used for detecting the state of the keys according to the capacitance change of the induction unit, and is connected with the induction unit and the main-control module respectively. By adopting the touch sensitive keys in the utility model, the service life of the keys is improved, and the sealing performance of the panel mounting digital display instrument is enhanced.
Description
Technical field
The utility model relates to a kind of dish dress instrument, particularly a kind of dish dress digital displaying meter that adopts the capacitance touch induced key.
Background technology
In Industry Control, dish dress instrument often is used to receive the signal that field apparatus sends by circuit, and carries out corresponding calculating, demonstration, control, record etc.For the ease of control, dish dress instrument often is to install concentratedly at the instrument cabinet (case) in places such as pulpit to go up (or interior).
The function of dish dress instrument is that the numerical value by showing makes the staff to monitor the situation at scene, and by the keyboard operation input to dish dress instrument, carries out corresponding operation to processor.
In the prior art, the input keyboard of dish dress instrument is normally formed by mechanical key combination, and button is carried out in its contact of need moving.The most frequently used is to press keyboard with hand to finish input action, by pressing the motion contact, makes two electric pole short circuits of keyswitch, thereby forms actuation of keys.
The moved fatigue lifetime and the wear-out life of contact restricts but the common feature of the press-key structure of motion contact is to use the life-span, and be shorter relatively.In case and keyboard damages, and change button, or change instrument, all wasting manpower and material resources.
In addition, the press-key structure of contact is realized actuation of keys owing to need to use finger to press the motion contact, therefore need be exposed to outside the encapsulating housing of instrument with the contact of will move to the housing outer lead in the housing of instrument, serve as a mark with the covering of materials such as fexible film again and seal.But as many occasions that exist various inflammable, explosion hazard gasess such as oil, chemical industry, its requirement of explosion proof is higher.Because of dish dress instrument generally is by powered battery, so also will meet requirement of explosion proof.But far do not meet the requirement of explosion proof of hazardous area in the mode of coverture covering motion contact.Common way is that keyboard is arranged in the lid, and in the time will operating instrument, uncap carries out button again.But such design is not only dangerous but also inconvenient.
In order to solve above-mentioned shortcoming, the patent disclosure of State Patent Office's application number 98121408.8 a kind of non-contact type intelligence instrument method to set up and device, its device adopts magnetic induction principle, flame-proof intelligent instrument magnetic switch keyboard in the complete seal is controlled, finished the setting and the switching of system.Its keyboard adopts the tongue tube keyboard, utilizes magnet to finish the action of button.The inside of tongue tube includes two reeds of being made by special material, generally separate, and when magnetisable material is close, under the effect of magnetic field magnetic line, two reeds are magnetized and the contact of attracting each other, reed just can be pulled together, and makes circuit communication, thereby has finished the action of button.Said apparatus has advantages such as simple in structure, esy to use, safe and reliable.
But above-mentioned tongue tube keyboard still belongs to the category of mechanical keyboard, and its serviceable life is still limited, lacks reliability.And the tongue tube keyboard must use magnetisable material to finish button, in case and magnetisable material damage or unexpected the loss just can not be operated instrument, thereby may cause serious consequence.
In sum, it is short that existing dish dress instrument exists serviceable life, the problem of poor reliability.
The utility model content
The purpose of this utility model provides a kind of dish dress digital displaying meter that adopts the capacitance touch induced key, and is short serviceable life to solve to solve existing dish dress instrument, the problem of poor reliability.
The utility model proposes a kind of dish dress digital displaying meter that adopts the capacitance touch induced key, it comprises housing, power supply, display device, connecting terminal apparatus, main control module and touch induction keyboard.Housing parcel display device and connecting terminal apparatus.Touch induction keyboard is in order to realize actuation of keys by pointing approaching or touching corresponding key position, and it links to each other with main control module.Touch induction keyboard comprises sensing unit and detecting unit again.Sensing unit is in order to react actuation of keys by changes in capacitance, it comprises touch sensible electric conductor and current-carrying plate, form the gap between touch sensible electric conductor and the current-carrying plate.Detecting unit is in order to detect the state of button according to the capacitance variations of sensing unit, it links to each other with sensing unit and main control module respectively.
According to the dish dress digital displaying meter of the described employing capacitance touch of the utility model preferred embodiment induced key, its detecting unit comprises modulation circuit and switching device shifter.Modulation circuit links to each other with main control module.Modulation circuit comprises programmable module, modulating capacitor again and with thinking that modulating capacitor provides the discharge resistance of discharge loop.Programmable module is connected to main control module.One end of modulating capacitor is connected to programmable module.Discharge resistance and ground connection after modulating capacitor is in parallel.Switching device shifter links to each other with sensing unit, modulation circuit and voltage source respectively.
Dish dress digital displaying meter according to the described employing capacitance touch of the utility model preferred embodiment induced key, its switching device shifter comprises first switch and second switch, first switch is arranged on the path of voltage source and sensing unit, second switch is arranged on the path between sensing unit and the modulating capacitor, and first switch is opposite with the switch phase of second switch.
According to the dish dress digital displaying meter of the described employing capacitance touch of the utility model preferred embodiment induced key, programmable module is the CY8C21534 chip.
According to the dish dress digital displaying meter of the described employing capacitance touch of the utility model preferred embodiment induced key, the touch sensible electric conductor is a pad.
According to the dish dress digital displaying meter of the described employing capacitance touch of the utility model preferred embodiment induced key, current-carrying plate is a Copper Foil.
According to the dish dress digital displaying meter of the described employing capacitance touch of the utility model preferred embodiment induced key, touch induction keyboard is overlying on the front end display device panel.
According to the dish dress digital displaying meter of the described employing capacitance touch of the utility model preferred embodiment induced key, its sensing unit also comprises plastic front board, and it is covered on touch sensible electric conductor and the current-carrying plate.
With respect to prior art, the utility model includes following advantage:
1, the utility model has adopted the touch induction keyboard that does not have mechanical parts, its circuit structure is simple, and the reaction velocity piece has been avoided the keys deactivation that physical damage caused of motion contact, increased the serviceable life of button, the reliability of dish dress digital displaying meter is increased greatly.
2, touch induction keyboard of the present utility model need not be by going between outside housing in the housing, can avoid punching at the exsertion part of housing, and keyboard can be arranged to fully closed structure, the Seal Design needs that more help instrument, not only can play a series of protective actions such as waterproof and dustproof, also make dish dress instrument be applicable to the demanding places of safety coefficient such as various oil, chemical industry.
Description of drawings
Fig. 1 is a kind of dish dress digital displaying meter front view that adopts the capacitance touch induced key of the utility model embodiment;
Fig. 2 is a kind of sensing unit synoptic diagram of the utility model embodiment;
Fig. 3 is a kind of sensing unit sectional view of the utility model embodiment;
Fig. 4 is a kind of detection cell circuit figure of the utility model embodiment;
Fig. 5 is a kind of detection cell circuit figure of the utility model embodiment;
Fig. 6 is the workflow diagram of programmable module.
Embodiment
Main thought of the present utility model be utilize finger and sensing unit near the time changes in capacitance, judge actuation of keys, thereby realize the touch-key of keyboard.
Below in conjunction with accompanying drawing, specify the utility model.
See also Fig. 1, it is a kind of dish dress digital displaying meter front view that adopts the capacitance touch induced key of the utility model embodiment.This adopts the dish dress digital displaying meter of capacitance touch induced key to comprise housing 101, power supply (not indicating among the figure), display device 103, connecting terminal apparatus 105, main control module (not indicating among the figure) and touch induction keyboard 107.Housing 101 wraps display device 103 and connecting terminal apparatus 105.Connecting terminal apparatus 105 is connected to on-the-spot equipment by signal wire.Instrument is when work, and display device 103 is towards the staff, and it is used to show field apparatus by the next signal of connecting terminal apparatus 105 transmission, and assigns subsequent instructions by staff's button.Power supply can be to be provided by AC power.Main control module is arranged on housing 101 inside, and it is accepted the operational order that touch induction keyboard 107 sends and carries out follow-up action.
At first introduce sensing unit, as shown in Figure 2, it is a kind of sensing unit synoptic diagram of the present utility model.This sensing unit comprises touch sensible electric conductor 203 and current-carrying plate 205.Form a gap 207 between touch sensible electric conductor 203 and the current-carrying plate 205.Touch sensible electric conductor 203 is connected to voltage source, current-carrying plate 205 ground connection, so the stray capacitance Cx of touch sensible electric conductor 203 mainly equals the stray capacitance Cp of (being gap 207) between touch sensible electric conductor 203 and the current-carrying plate 205, i.e. Cx=Cp.Stray capacitance refers to the capacitance characteristic that electric conductors such as inductance, resistance, chip pin show under high frequency situations.
When staff's finger during near touch induction keyboard 107, as shown in Figure 3, finger also can produce stray capacitance with touch sensible electric conductor 203, the stray capacitance Cx of touch sensible electric conductor 203 mainly is stray capacitance Cp and the capacitance after the stray capacitance Cf addition between finger and the touch sensible electric conductor 203, the i.e. Cx=Cp+Cf between touch sensible electric conductor 203 and the current-carrying plate 205 at this moment.So just realized reacting the purpose of actuation of keys by changes in capacitance.
Wherein, touch sensible electric conductor 203 can be tin directly to be welded on the pcb board constitute, perhaps also can be to be arranged on the pcb board by other conductive material to constitute, touch sensible electric conductor 203 among Fig. 2 is circular, according to the needs of button, also can be set to shapes such as square, triangle, rectangle.Current-carrying plate 205 can be made of conductive material such as Copper Foils.In addition, on touch sensible electric conductor 203 and current-carrying plate 205, can cover one deck plastic front board 303, both can prevent that finger touches from arriving touch sensible electric conductor 203 backs and changing capacitances, can guarantee the sealing of keyboard again.
When touch induction keyboard 107 only was made of a key position, it only comprised a sensing unit and a detecting unit.And when touch induction keyboard 107 need be made of a plurality of keys position, it can be made of a plurality of sensing units and a plurality of detecting unit.And different sensing units can be provided with different capacitances, thereby can reach the purpose of distinguishing different keys position.As between the touch sensible electric conductor 203 of numerical key " 1 " and numerical key " 2 " and the current-carrying plate 205 different parasitic capacitance values being set, and distinguish by the relevant detection unit, thereby can make main control module can the identifying operation personnel be by numerical key " 1 " or numerical key " 2 ".
Introduce detecting unit below.Detecting unit links to each other with touch sensible electric conductor 203, and it is the integrated circuit of a special use.Detecting unit comprises modulation circuit 403 and switching device shifter 405, and as shown in Figure 4, it is a kind of detection cell circuit figure of the utility model embodiment.Wherein, capacitor C x is the stray capacitance of equivalence on the sensing unit.Modulation circuit 403 is in order to convert capacitor discharge time to the button message, and it links to each other with main control module.Switching device shifter 405 links to each other with voltage source V dd, capacitor C x and modulation circuit 403 respectively.In the present embodiment, switching device shifter 405 is that the opposite HF switch of two phase places are formed, i.e. the first switch S w1 and second switch Sw2, and second switch Sw2 disconnects when the first switch S w1 is closed, second switch Sw2 closure during first switch S w1 disconnection.When the first switch S w1 was closed, voltage source V dd was capacitor C x charging, and when second switch Sw2 was closed, capacitor C x was modulating capacitor Cmod charging.Under the switching of these two switches, formed capacitor C x is a resistance that is connected between voltage source V dd and the modulation circuit 403 by equivalence on the sensing unit of touch induction keyboard 107, to capacitor C mod charging, and this resistance value changes with the variation of capacitor C x value voltage source V dd by this resistance.
In the present embodiment, when the voltage on the capacitor C mod during greater than the activation threshold value of comparator C MP, be that voltage on the capacitor C mod is during greater than reference voltage Vaf, comparator C MP exports a high level, this high level signal gauge tap Sw3 closure makes discharge resistance Rb ground connection, capacitor C mod is again by discharge resistance Rb discharge, voltage on capacitor C mod is lower than the activation threshold value of comparator C MP, then the output switching activity of comparator C MP is a low level, switch S w3 disconnects, and capacitor C mod restarts charging.Because capacitance Cx is proportional to capacitor C mod, and the duration of the last output of comparator C MP high level is depended on the magnitude of voltage on the capacitor C mod, and therefore, the duration of comparator C MP output high level is proportional to capacitance Cx.And follow-up circuit is converted into the count pulse number with this time, can directly read for main control module.Main control module comes whether button of decision operation personnel according to the count pulse number that is read.
Fig. 4 only is a kind of embodiment of detecting unit, and it can not limit the utility model.The modulation circuit of detecting unit can be made of modulating capacitor, discharge resistance and programmable module, and programmable module can adopt the chip CY8C21534 of CapSence family to realize.As shown in Figure 5, it is a kind of detection cell circuit figure of the utility model embodiment.This detecting unit mainly utilizes the programmable resource of CY8C21534 chip internal and the outer resistance-capacitance network (modulating capacitor Cmod and discharge resistance Rb) of sheet to realize the detection to capacitance type touch key, pass through internal configurations, the outer resistance-capacitance network of the internal resource of CY8C21534 chip and sheet has constituted modulation circuit jointly, the CY8C21534 chip internal detects the capacitance variations of sensing unit by the switching capacity principle, thereby whether perception has finger (perhaps other conductor) touch keyboard.
But CY8C21534 chip internal software for editing program, bottom API is provided (software library function), be used to read because the count pulse number that the capacitance variations of sensing unit is exported, and judge whether have button to be pressed according to the scope of count value, and key-press status is saved in its internal memory, read for main control module.And the CY8C21534 chip is by internal integrate circuit bus interface and main control module communication, and communication is a passive mode, and after promptly main control module sent reading order, the CY8C21534 chip sent to main control module with key-press status.Bus communication can be to finish in interrupt handling routine.Wherein, Fig. 6 is the groundwork process flow diagram that a kind of main control module of the utility model embodiment reads touch key-press, and it may further comprise the steps:
S601, touch key-press scanning initialization bus communication setting.Promptly the communication setting of bus is carried out the initialization setting.
S603, touch key-press scanning.Master control set reads the button situation.
S605 upgrades key-press status.
With respect to prior art, the utility model includes following advantage:
1, the utility model has adopted the touch induction keyboard that does not have mechanical parts, its circuit structure is simple, and the reaction velocity piece has been avoided the keys deactivation that physical damage caused of motion contact, increased the serviceable life of button, the reliability of dish dress digital displaying meter is increased greatly.
2, touch induction keyboard of the present utility model need not be by going between outside housing in the housing, can avoid punching at the exsertion part of housing, and keyboard can be arranged to fully closed structure, the Seal Design needs that more help instrument, not only can play a series of protective actions such as waterproof and dustproof, also make dish dress instrument be applicable to the demanding places of safety coefficient such as various oil, chemical industry.
More than disclosed only be several specific embodiment of the present utility model, but the utility model is not limited thereto, any those skilled in the art can think variation, all should drop in the protection domain of the present utility model.
Claims (8)
1, a kind of dish dress digital displaying meter that adopts the capacitance touch induced key, it comprises a housing, a power supply, a display device, a connecting terminal apparatus and a main control module, this housing wraps up this display device and this connecting terminal apparatus, it is characterized in that, its also comprise in order to by point near or touch the touch induction keyboard that corresponding key position is realized actuation of keys, it links to each other with this main control module, and wherein, this touch induction keyboard comprises again:
In order to react a sensing unit of actuation of keys by changes in capacitance, it comprises a touch sensible electric conductor and a current-carrying plate, forms a gap between this touch sensible electric conductor and this current-carrying plate;
In order to detect a detecting unit of key-press status according to the capacitance variations of this sensing unit, it links to each other with this sensing unit and this main control module respectively.
2, the dish of employing capacitance touch induced key as claimed in claim 1 dress digital displaying meter, it is characterized in that, this detecting unit comprises a modulation circuit and a switching device shifter, this modulation circuit links to each other with this main control module, this switching device shifter links to each other with this sensing unit, this modulation circuit and voltage source respectively, wherein, this modulation circuit comprises again:
One programmable module, it is connected to this main control module;
One modulating capacitor, the one end is connected to this programmable module;
Provide a discharge resistance of the discharge loop of this modulating capacitor, itself and ground connection after this modulating capacitor is in parallel.
3, the dish of employing capacitance touch induced key as claimed in claim 2 dress digital displaying meter, it is characterized in that, this switching device shifter comprises one first switch and a second switch, this first switch is arranged on the path of voltage source and this sensing unit, this second switch is arranged on the path between this sensing unit and this modulating capacitor, and this first switch is opposite with the switch phase of this second switch.
4, the dish of employing capacitance touch induced key as claimed in claim 2 dress digital displaying meter is characterized in that this programmable module is the CY8C21534 chip.
5, the dish of employing capacitance touch induced key as claimed in claim 1 dress digital displaying meter is characterized in that this touch sensible electric conductor is a pad.
The dish dress digital displaying meter of 6 employing capacitance touch induced keys as claimed in claim 1 is characterized in that this current-carrying plate is a Copper Foil.
7, the dish of employing capacitance touch induced key as claimed in claim 1 dress digital displaying meter is characterized in that this touch induction keyboard is overlying on the front end display device panel.
8, the dish of employing capacitance touch induced key as claimed in claim 1 dress digital displaying meter is characterized in that this sensing unit also comprises a plastic front board, and it is covered on this touch sensible electric conductor and this current-carrying plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201564694U CN201344803Y (en) | 2008-12-03 | 2008-12-03 | Panel mounting digital display instrument adopting capacitance touch induced keys |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201564694U CN201344803Y (en) | 2008-12-03 | 2008-12-03 | Panel mounting digital display instrument adopting capacitance touch induced keys |
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| Publication Number | Publication Date |
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| CN201344803Y true CN201344803Y (en) | 2009-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201564694U Expired - Fee Related CN201344803Y (en) | 2008-12-03 | 2008-12-03 | Panel mounting digital display instrument adopting capacitance touch induced keys |
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| CN (1) | CN201344803Y (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102209174A (en) * | 2010-03-31 | 2011-10-05 | 佳能株式会社 | Image reading apparatus |
| CN102629867A (en) * | 2012-03-21 | 2012-08-08 | 中山市永衡日用制品有限公司 | Gesture recognition touch switch and electronic scale using the switch |
| CN102809420A (en) * | 2012-07-26 | 2012-12-05 | 奥豪斯仪器（常州）有限公司 | Capacitive keyboard of electronic scale and anti-interference detecting method for capacitive keyboard |
| CN105923479A (en) * | 2016-07-14 | 2016-09-07 | 上海思慧德安防设备有限公司 | Capacitive non-contact elevator button |
| CN106240210A (en) * | 2016-08-17 | 2016-12-21 | 龚云超 | A kind of equipment of intelligent engraving dowel |
| CN106272717A (en) * | 2016-08-17 | 2017-01-04 | 夏林达 | A kind of device processing timber |
| CN106335105A (en) * | 2016-08-20 | 2017-01-18 | 曾冰冰 | Intelligent wood processing equipment |
| CN106774651A (en) * | 2016-11-30 | 2017-05-31 | 安徽华米信息科技有限公司 | Touch controlled key and wearable device |
| CN107040842A (en) * | 2016-06-21 | 2017-08-11 | 上海勤琨信息科技有限公司 | A kind of full intelligent environment protection solar energy sound equipment |
| CN112202429A (en) * | 2020-10-15 | 2021-01-08 | 桂林优利特医疗电子有限公司 | A multifunctional key control system and control method thereof |
| CN114221644A (en) * | 2022-02-22 | 2022-03-22 | 杭州炬源智能科技有限公司 | Intelligent water meter with touch keys and detection method of touch keys |
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2008
- 2008-12-03 CN CNU2008201564694U patent/CN201344803Y/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102209174B (en) * | 2010-03-31 | 2014-08-13 | 佳能株式会社 | Image reading apparatus |
| CN102209174A (en) * | 2010-03-31 | 2011-10-05 | 佳能株式会社 | Image reading apparatus |
| CN102629867A (en) * | 2012-03-21 | 2012-08-08 | 中山市永衡日用制品有限公司 | Gesture recognition touch switch and electronic scale using the switch |
| CN102629867B (en) * | 2012-03-21 | 2014-07-16 | 中山市永衡日用制品有限公司 | Gesture recognition touch switch and electronic scale using same |
| CN102809420A (en) * | 2012-07-26 | 2012-12-05 | 奥豪斯仪器（常州）有限公司 | Capacitive keyboard of electronic scale and anti-interference detecting method for capacitive keyboard |
| CN102809420B (en) * | 2012-07-26 | 2015-04-01 | 奥豪斯仪器（常州）有限公司 | Capacitive keyboard of electronic scale and anti-interference detecting method for capacitive keyboard |
| CN107040842A (en) * | 2016-06-21 | 2017-08-11 | 上海勤琨信息科技有限公司 | A kind of full intelligent environment protection solar energy sound equipment |
| CN105923479A (en) * | 2016-07-14 | 2016-09-07 | 上海思慧德安防设备有限公司 | Capacitive non-contact elevator button |
| CN106272717A (en) * | 2016-08-17 | 2017-01-04 | 夏林达 | A kind of device processing timber |
| CN106240210A (en) * | 2016-08-17 | 2016-12-21 | 龚云超 | A kind of equipment of intelligent engraving dowel |
| CN106335105A (en) * | 2016-08-20 | 2017-01-18 | 曾冰冰 | Intelligent wood processing equipment |
| CN106774651A (en) * | 2016-11-30 | 2017-05-31 | 安徽华米信息科技有限公司 | Touch controlled key and wearable device |
| CN112202429A (en) * | 2020-10-15 | 2021-01-08 | 桂林优利特医疗电子有限公司 | A multifunctional key control system and control method thereof |
| CN114221644A (en) * | 2022-02-22 | 2022-03-22 | 杭州炬源智能科技有限公司 | Intelligent water meter with touch keys and detection method of touch keys |
| CN114221644B (en) * | 2022-02-22 | 2023-08-29 | 杭州炬源智能科技有限公司 | Intelligent water meter with touch keys and detection method of touch keys |
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Legal Events
| Date | Code | Title | Description |
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| 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: 20091111 Termination date: 20161203 |
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| CF01 | Termination of patent right due to non-payment of annual fee |