CN102779668A - Magnetic induction lock control loop of press key box - Google Patents
Magnetic induction lock control loop of press key box Download PDFInfo
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- CN102779668A CN102779668A CN201110124457XA CN201110124457A CN102779668A CN 102779668 A CN102779668 A CN 102779668A CN 201110124457X A CN201110124457X A CN 201110124457XA CN 201110124457 A CN201110124457 A CN 201110124457A CN 102779668 A CN102779668 A CN 102779668A
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Abstract
The invention discloses a magnetic induction lock control loop of a press key box. The magnetic induction lock control loop comprises a single-polarity hall induction switch integrated circuit, a bus-bar buffer brake three-state output integrated circuit, at least one optical coupler and a press key scanning unit, a magnetic induction area is arranged on the press key box, a magnetic key with a south pole and a north pole approaches to the magnetic induction area by different magnetic poles respectively to perform sensing, the bus-bar buffer brake three-state output integrated circuit is electrically connected with the single-polarity hall induction switch integrated circuit, the bus-bar buffer brake three-state output integrated circuit is electrically connected with a microcontroller through an output voltage pin, the optical coupler is electrically connected with the bus-bar buffer brake three-state output integrated circuit, the press key scanning unit comprises at least one key switch, one end of each key switch is electrically connected with corresponding optical coupler, and the other end of each key switch is electrically connected with the microcontroller through an input voltage pin. According to the magnetic induction lock control loop of the press key box, a single control loop is utilized, namely one and the same magnetic induction area can be used to enable a plurality of press keys to achieve locking and unlocking effects simultaneously, and error touch and misoperation can be prevented.
Description
Technical field
The present invention relates to a kind of control loop of key box, refer to a kind of control loop that utilizes magnetic induction button to be carried out release and locking especially.
Background technology
With regard to the control of general industry control or medical equipment, through key box actions such as equipment or facility are controlled and to be concentrated, so that the user belongs to known technology to the technology that equipment or facility carry out line traffic control or remote control.
The safety problem that produces malfunction for fear of the equipment that causes because of the touch of key-press by accident box being controlled or facility is by key box release mechanism 1 illustrated in figures 1 and 2 (PCT application; Publication number WO2005036576) mentioned; Specifically; Its safety function provides through following mode: be hubbed at by butterfly-shaped fin 2 in the box body of key box, and fin 2 openings at two ends 3 are nested with respectively on the button post 4 of the touching switch (tactile switch) a correspondence, through rotating this fin 2 hole wall at opening 3 less internal diameter positions is enclosed on the corresponding button post 4; To stop that the external force that presses down produces button 5 and moves down action, prevent the false touch malfunction thereby reach.
Though above-mentioned technology can reach its desired safe effect,, there is following defective in it: first; Fin 2 is subject to the mode of pivotal action and works; It can only, also be to carry out Synchronization Control to the button post 4 that is positioned at two openings 3, and can not realize extensive or specific anti-shake-up effect through 2 pairs of more or less touching switches of single fin, therefore; In practical application, its flexibility is limited; Second; In order to prevent that the structure that button post 4 is touched from being to form between laminated circuit board 6 and box body button with fin 2 to stop; The situation of avoiding button when receiving pressed by external force, to have causing to bottom offset touching corresponding button takes place, still, though this anti-mechanism that touches has the effect of the malfunction of preventing under general operating position; But when running into excessive external force, still have the possibility of malfunction; The 3rd, single fin 2 only can and need two touching switches of control, and it need be set between laminated circuit board 6 and button, and anti-function of touching just can be provided, and therefore, has cost height, the loaded down with trivial details shortcoming of assembling.
Summary of the invention
The object of the present invention is to provide a kind of magnetic induction lock control loop of key box, the magnetic induction lock control loop of this key box can be controlled the release and the locking of button, and makes key box assemble easily.
To achieve these goals, the present invention has adopted following technical scheme:
A kind of magnetic induction lock control loop of key box; This key box carries out communication through pushing of button with a microcontroller; Produce the different actions state with the control action element; The release and the locking of this this button of magnetic induction lock control circuit controls is characterized in that: this magnetic induction lock control loop comprises:
A unipolarity hall sensing switch IC, this unipolarity hall sensing switch IC has a magnetic induction district on this key box, and the magnetic key with the South Pole and arctic carries out sensing with its different magnetic poles near this magnetic induction district respectively;
A bus-bar buffer lock three condition output IC; The control input end of this bus-bar buffer lock three condition output IC electrically connects the output of this unipolarity hall sensing switch IC, and the signal input part of this bus-bar buffer lock three condition output IC electrically connects with the corresponding input and output terminal of this microcontroller via the output voltage pin;
At least one optical coupler, the input of this at least one optical coupler electrically connect the signal output part of this bus-bar buffer lock three condition output IC;
A key scan unit; This key scan unit comprises at least one key switch; One end of each key switch and the output of a corresponding optical coupler electrically connect, and the other end of each key switch electrically connects with the corresponding input and output terminal of this microcontroller via an input voltage pin.
Advantage of the present invention is:
Key box compared to convention; The invention enables lockset that key box do not need mechanism for mounting property in key box; Because the part volume of key box is little and member is a modularity; Therefore have the simple characteristic of assembling, and the mechanism that can avoid the solid lock construction of mechanical type to be caused in long-time action back damages the generation of situation, and; The present invention is that same magnetic induction capable of using district reaches the effect of locking and release with seasonal a plurality of buttons with the design of single control loop, and the situation of false touch malfunction can not take place.
Description of drawings
Fig. 1 is the fin sketch map of the key box release mechanism of convention;
Fig. 2 is the composition sketch map of the key box release mechanism of convention;
Fig. 3 is the composition block diagram of control loop of the present invention;
Fig. 4 is the circuit theory sketch map of control loop of the present invention.
Embodiment
Fig. 3, Fig. 4 are respectively a key box 10 and block schematic diagram, the circuit diagram that microcontroller 20 carries out communication; Wherein, this key box 10 carries out communication through pushing of button with this microcontroller 20, in the present embodiment; Be applied to control a linear brake 30; Make it produce the different actions state, the release and the locking of this magnetic induction lock control circuit controls button, this magnetic induction lock control loop comprises:
A unipolarity hall sensing switch IC 11; This unipolarity hall sensing switch IC 11 has a magnetic induction district (not shown) on key box 10, a magnetic key (not shown) has the South Pole (S-Pole) and the arctic (N-Pole), this magnetic key capable of using; Come near carrying out sensing in this magnetic induction district with its South Pole or arctic different magnetic poles respectively; In the present embodiment, when the arctic of magnetic key (N-Pole) near this magnetic induction district in during sensing, be released state; To be lighted when the button release this moment by a light-emitting diode (not shown); When the South Pole of magnetic key (S-Pole) near this magnetic induction district in during sensing, be blocking, this moment, this light-emitting diode extinguished by key lockout the time.
A bus-bar buffer lock three condition output IC 12; The control input end of this bus-bar buffer lock three condition output IC 12 electrically connects the output of this unipolarity hall sensing switch IC 11, and the signal input part of this bus-bar buffer lock three condition output IC 12 electrically connects with the corresponding input and output terminal of this microcontroller 20 via output voltage pin (not shown).
A plurality of optical couplers 13, the input of these a plurality of optical couplers 13 electrically connect the signal output part of this bus-bar buffer lock three condition output IC 12.
A key scan unit 14; This key scan unit 14 comprises a plurality of above-mentioned button (not shown)s; One end of each button and the output of corresponding this optical coupler 13 electrically connect, and the other end of each button electrically connects with the corresponding input and output terminal of this microcontroller 20 via an input voltage pin (not shown).
Visible by above-mentioned explanation; When arctic of magnetic key (N-Pole) during near the magnetic induction district of unipolarity hall sensing switch IC 11; These unipolarity hall sensing switch IC 11 conductings; And make bus-bar buffer lock three condition output IC 12 let the output voltage pin conducting of control loop; And one of them optical coupler 13 conducting, the function of supposing the linear brake 30 that this optical coupler 13 is corresponding this moment are for stretching out or the action of withdrawing, when pushing therewith optical coupler 13 corresponding key; Then the pairing input voltage pin of control loop can conducting, and microcontroller 20 will be controlled the action of linear brake 30 according to these two voltage signals of input voltage pin of the output voltage pin of control loop and control loop this moment.
Otherwise; When South Pole of magnetic key (S-Pole) during near the magnetic induction district of unipolarity hall sensing switch IC 11; This unipolarity hall sensing switch IC 11 is not conducting; And make bus-bar buffer lock three condition output IC 12 let the not conducting of output voltage pin of control loop, and optical coupler 13 not conductings, when pushing therewith optical coupler 13 corresponding key this moment; Then not conducting of pairing input voltage pin in the control loop, this moment, microcontroller then made this linear brake 30 be failure to actuate because of the input voltage pin of control loop for not conducting.
Be not difficult to find that by above-mentioned explanation advantage of the present invention is: compared to the key box of convention; The invention enables lockset that key box do not need mechanism for mounting property in key box; Because the part volume of key box is little and member is a modularity; Therefore have the simple characteristic of assembling, and the mechanism that can avoid the solid lock construction of mechanical type to be caused in long-time action back damages the generation of situation, and; The present invention is that same magnetic induction capable of using district reaches the effect of locking and release with seasonal a plurality of buttons with the design of single control loop, and the situation of false touch malfunction can not take place.
Above-mentioned is preferred embodiment of the present invention and the know-why used thereof; For a person skilled in the art; Under the situation that does not deviate from the spirit and scope of the present invention; Any based on conspicuous changes such as the equivalent transformation on the technical scheme of the present invention basis, simple replacements, all belong within the protection range of the present invention.
Claims (2)
1. the magnetic induction lock control loop of a key box; This key box carries out communication through pushing of button with a microcontroller; Produce the different actions state with the control action element; The release and the locking of this this button of magnetic induction lock control circuit controls is characterized in that: this magnetic induction lock control loop comprises:
A unipolarity hall sensing switch IC, this unipolarity hall sensing switch IC has a magnetic induction district on this key box, and the magnetic key with the South Pole and arctic carries out sensing with its different magnetic poles near this magnetic induction district respectively;
A bus-bar buffer lock three condition output IC; The control input end of this bus-bar buffer lock three condition output IC electrically connects the output of this unipolarity hall sensing switch IC, and the signal input part of this bus-bar buffer lock three condition output IC electrically connects with the corresponding input and output terminal of this microcontroller via the output voltage pin;
At least one optical coupler, the input of this at least one optical coupler electrically connect the signal output part of this bus-bar buffer lock three condition output IC;
A key scan unit; This key scan unit comprises at least one key switch; One end of each key switch and the output of a corresponding optical coupler electrically connect, and the other end of each key switch electrically connects with the corresponding input and output terminal of this microcontroller via an input voltage pin.
2. the magnetic induction lock control loop of key box as claimed in claim 1, it is characterized in that: said magnetic induction lock control loop comprises a light-emitting diode that when the button release, lights.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110124457XA CN102779668A (en) | 2011-05-13 | 2011-05-13 | Magnetic induction lock control loop of press key box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110124457XA CN102779668A (en) | 2011-05-13 | 2011-05-13 | Magnetic induction lock control loop of press key box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102779668A true CN102779668A (en) | 2012-11-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110124457XA Pending CN102779668A (en) | 2011-05-13 | 2011-05-13 | Magnetic induction lock control loop of press key box |
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| CN (1) | CN102779668A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111524733A (en) * | 2020-04-28 | 2020-08-11 | 湖南创安防爆电器有限公司 | Magnetic type emergency stop button for flameproof shell |
| CN111912435A (en) * | 2020-09-07 | 2020-11-10 | 山东山森数控技术有限公司 | Electromagnetic safety door switch signal detection method |
| CN112299311A (en) * | 2020-11-04 | 2021-02-02 | 合肥德通科贸有限公司 | Intelligent control handle for electric forklift |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6879145B1 (en) * | 2002-02-15 | 2005-04-12 | Larry L. Harris | Voltage isolation buffer with hall effect magnetic field sensor |
| CN101340187A (en) * | 2007-07-02 | 2009-01-07 | 鸿富锦精密工业（深圳）有限公司 | Non-contact type electronic switch |
| CN201251769Y (en) * | 2008-08-12 | 2009-06-03 | 无敌科技(西安)有限公司 | Device capable of locking keystroke |
| CN101452340A (en) * | 2007-11-30 | 2009-06-10 | 鸿富锦精密工业（深圳）有限公司 | Keyboard |
| CN101496281A (en) * | 2006-05-26 | 2009-07-29 | 明大工业有限公司 | Contactless switching system |
-
2011
- 2011-05-13 CN CN201110124457XA patent/CN102779668A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6879145B1 (en) * | 2002-02-15 | 2005-04-12 | Larry L. Harris | Voltage isolation buffer with hall effect magnetic field sensor |
| CN101496281A (en) * | 2006-05-26 | 2009-07-29 | 明大工业有限公司 | Contactless switching system |
| CN101340187A (en) * | 2007-07-02 | 2009-01-07 | 鸿富锦精密工业（深圳）有限公司 | Non-contact type electronic switch |
| CN101452340A (en) * | 2007-11-30 | 2009-06-10 | 鸿富锦精密工业（深圳）有限公司 | Keyboard |
| CN201251769Y (en) * | 2008-08-12 | 2009-06-03 | 无敌科技(西安)有限公司 | Device capable of locking keystroke |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111524733A (en) * | 2020-04-28 | 2020-08-11 | 湖南创安防爆电器有限公司 | Magnetic type emergency stop button for flameproof shell |
| CN111912435A (en) * | 2020-09-07 | 2020-11-10 | 山东山森数控技术有限公司 | Electromagnetic safety door switch signal detection method |
| CN111912435B (en) * | 2020-09-07 | 2023-06-30 | 山东山森数控技术有限公司 | Electromagnetic safety door switch signal detection method |
| CN112299311A (en) * | 2020-11-04 | 2021-02-02 | 合肥德通科贸有限公司 | Intelligent control handle for electric forklift |
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Application publication date: 20121114 |