CN102594316A - Four-gear self-locking interlocking switch circuit - Google Patents
Four-gear self-locking interlocking switch circuit Download PDFInfo
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- CN102594316A CN102594316A CN2012100369587A CN201210036958A CN102594316A CN 102594316 A CN102594316 A CN 102594316A CN 2012100369587 A CN2012100369587 A CN 2012100369587A CN 201210036958 A CN201210036958 A CN 201210036958A CN 102594316 A CN102594316 A CN 102594316A
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Abstract
The invention relates to a four-gear self-locking interlocking switch circuit which comprises a 12V direct current power supply, operational amplifiers IC1, an output level voltage division circuit and a direct current power supply voltage division circuit, wherein the model of the operational amplifiers IC1 is LM324 and each operational amplifier can form four gears of self-locking interlocking switch circuit which are same in structure. According to the invention, the defects of a mechanical self-locking interlocking switch are overcome. Through a special design, each set of operational amplifier has the dual functions of a voltage comparer and a Schmitt trigger. Since the input impedance of each operational amplifier is high and input current of a key switch is very small, input and output levels of the switch meet the requirement of the interface level of a digital circuit and the key can share the same set of working power supply with the digital circuit. The four-gear self-locking interlocking switch circuit has the characteristics of high voltage application range, high gear design freedom and the like, can take a tact switch and a conducting rubber/membrane switch as a key switch and can be used for driving optical, electric and magnetic control circuits and control circuits of silicon controlled rectifiers and relays and the like.
Description
Technical field
The invention belongs to electronic technology and automation field, relate to a kind of fourth gear self-locking interlock switch circuit.
Background technology
It is a lot of that the self-locking interlock switch uses aspect electrical equipment and automation control, and the shortcoming of mechanical type self-locking interlock switch is: volume is big, press that touch is big, switch speed is low, easy to wear, and is not easy and the supporting use of digital circuit.
Fourth gear self-locking interlock switch circuit of the present invention has overcome some defectives that mechanical type self-locking interlock switch exists.The core parts of this circuit adopt four-operational amplifier integrated circuit LM324, through design distinguishingly, make every group of operational amplifier that the dual-use function of voltage comparator and Schmidt trigger all arranged.Because the input impedance of operational amplifier is higher, the input current of key switch is minimum, and the input of switch and output level meet the requirement of digital circuit interface level, can be same with one group of working power with digital circuit.The present invention has characteristics such as the voltage scope of application is wide, gear can design arbitrarily, can select for use touch-switch, conductive rubber, thin film switch as key switch, can be used for conversion driving light, electricity, magnetic or drives control circuits such as controllable silicon, relay.
Below specify fourth gear self-locking interlock switch circuit related correlation technique content in manufacturing process.
Summary of the invention
Goal of the invention and beneficial effect: fourth gear self-locking interlock switch circuit of the present invention has overcome some defectives that mechanical type self-locking interlock switch exists.The core parts of this circuit adopt four-operational amplifier integrated circuit LM324, through design distinguishingly, make every group of operational amplifier that the dual-use function of voltage comparator and Schmidt trigger all arranged.Because the input impedance of operational amplifier is higher, the input current of key switch is minimum, and the input of switch and output level meet the requirement of the interface level of digital circuit, can use a working power together with digital circuit.The present invention has characteristics such as the voltage scope of application is wide, gear can design arbitrarily, can select for use touch-switch, conductive rubber, thin film switch as key switch, can be used for conversion driving light, electricity, magnetic or drives control circuits such as controllable silicon, relay.
The circuit working principle: every grade of circuit of fourth gear self-locking interlock switch circuit is formed identical; Be example with first grade of operation principle below; When circuit is connected the 12V DC power supply; By resistance R 1, R2 the 12V DC power supply is carried out dividing potential drop,, make each grade operational amplifier output low level for each grade operational amplifier end of oppisite phase provides high level.After pressing first grade of key switch AN1, the positive terminal of corresponding operational amplifier obtains high level, is higher than the about 1.4V of end of oppisite phase voltage (pressure drops of 2 transwitch diodes), and output becomes high level.Because of the feedback of resistance R 3, R4 dividing potential drop is arranged, the positive terminal level still is higher than end of oppisite phase, and output is kept high level.When another button was connected, circuit repeated said process, made the end of oppisite phase level of this grade operational amplifier be higher than the positive terminal level that resistance R 3, R4 dividing potential drop form through 2 transwitch diode D1, D2 simultaneously, so output is a level by the high level step-down.In a word, whenever press a certain shelves key switch once, have only this grade operational amplifier output high level, all the other each grades are output low level all.
Technical scheme: fourth gear self-locking interlock switch circuit, comprise 12V DC power supply, operational amplifier IC1, output level bleeder circuit, DC power supply bleeder circuit composition, it is characterized in that:
It is LM324 that operational amplifier IC1 adopts the model of integrated circuit, and every operational amplifier IC1 can form fourth gear self-locking interlock switch circuit, and every grade of self-locking interlock switch circuit structure is identical, first grade of self-locking interlock switch circuit:
(1) the termination 12V dc power anode VCC of the 4th pin of operational amplifier IC1 and key switch AN1; The 3rd pin of another termination operational amplifier IC1 of key switch AN1 and the positive pole of switching diode D1; The negative pole of switching diode D1 connects the positive pole of switching diode D2; The negative pole of switching diode D2 connects the 2nd pin of operational amplifier IC1, the 11st pin connection circuit ground GND of operational amplifier IC1;
(2) end of the 1st pin connecting resistance R3 of the operational amplifier IC1 in the output level bleeder circuit, the other end of resistance R 3 links to each other the other end connection circuit ground GND of resistance R 4 with the 3rd pin of operational amplifier IC1 and an end of resistance R 4.
The DC power supply bleeder circuit: a termination 12V dc power anode VCC of resistance R 1, the other end of resistance R 1 links to each other with an end of resistance R 2, the 2nd pin of operational amplifier IC1, the other end connection circuit ground GND of resistance R 2.
The structure and the element connected mode of second grade and other two grades of self-locking interlock switch circuit are identical with first grade of self-locking interlock switch circuit structure and element connected mode.
Description of drawings
Accompanying drawing 1 is the fundamental diagram of fourth gear self-locking interlock switch circuit, the two grades of self-locking interlock switch that drawn in the accompanying drawing 1, that is: first grade and second grade; Dotted line in the accompanying drawing 1 representes to confirm as required the shelves number of self-locking interlock switch circuit; In every LM324 type integrated circuit four groups of separate operational amplifiers are arranged.
Embodiment
Specification requirement according to circuit working schematic diagram shown in the accompanying drawing 1 and description of drawings and the following stated is implemented, and can realize the present invention.
The technical parameter of components and parts and selection
IC1 is an operational amplifier; The model of selecting for use is LM324; It is by four groups of circuit of forming of operational amplifier independently, and it can be worked in the single-power voltage scope of broad, also can under the duplicate supply condition, work; The supply voltage working range: single supply 3V～30V, duplicate supply ± 1.5V～± 15V;
LM324 type integrated circuit be encapsulated as dual inline type, its 14 functions and pin are respectively: 1 pin OUTPUT, 1,2 pin INPUT 1-, 3 pin INPUT 1+; 4 pin connect the positive pole of power supply; 5 pin INPUT 2+, 6 pin INPUT 2-, 7 pin OUTPUT 2; 8 pin OUTPUT, 3,9 pin INPUT 3-, 10 pin INPUT 3+; 11 pin connection circuit ground; 12 pin INPUT 4+, 13 pin INPUT 4-, 14 pin OUTPUT 4; OUTPUT is the output of operational amplifier; INPUT+ is the positive input of operational amplifier; INPUT-is the reverse input end of operational amplifier;
D1～D2 is the transwitch diode, the model 1N4148 that selects for use;
The resistance of resistance R 1 is 100K Ω; The resistance of resistance R 2 is 10K Ω; The resistance of resistance R 3～R6.....Rn, Rn+1 is 5.1K Ω;
AN selects key switch open in usual for use; The operating voltage of DC power supply is 9～12V.
Circuit production main points and circuit debugging
In design, making, can confirm the shelves number of fourth gear self-locking interlock switch circuit and the number of elements of use LM324 type integrated circuit according to controlling object quantity; Use 1 LM324 type integrated circuit can form fourth gear self-locking interlock switch circuit,, can be used as the general reset of self-locking interlock switch circuit if in circuit, increase a neutral gear;
For guaranteeing fourth gear self-locking interlock switch circuit reliably working; The resistance of each resistance should just be done corresponding adjustment according to the DC power supply voltage of selecting for use; Guarantee that each grade self-locking interlock switch circuit is stable, under the prerequisite of reliably working; The resistance of each resistance should be selected big slightly, can effectively reduce the circuit idling consumption like this.
Claims (3)
1. a fourth gear self-locking interlock switch circuit comprises 12V DC power supply, operational amplifier IC1, output level bleeder circuit, DC power supply bleeder circuit composition, it is characterized in that:
It is LM324 that operational amplifier IC1 adopts the model of integrated circuit, and every operational amplifier IC1 can form fourth gear self-locking interlock switch circuit, and every grade of self-locking interlock switch circuit structure is identical, first grade of self-locking interlock switch circuit:
(1) the termination 12V dc power anode VCC of the 4th pin of operational amplifier IC1 and key switch AN1; The 3rd pin of another termination operational amplifier IC1 of key switch AN1 and the positive pole of switching diode D1; The negative pole of switching diode D1 connects the positive pole of switching diode D2; The negative pole of switching diode D2 connects the 2nd pin of operational amplifier IC1, the 11st pin connection circuit ground GND of operational amplifier IC1;
(2) end of the 1st pin connecting resistance R3 of the operational amplifier IC1 in the output level bleeder circuit, the other end of resistance R 3 links to each other the other end connection circuit ground GND of resistance R 4 with the 3rd pin of operational amplifier IC1 and an end of resistance R 4.
2. fourth gear self-locking interlock switch circuit according to claim 1; It is characterized in that: a termination 12V dc power anode VCC of the resistance R 1 in the DC power supply bleeder circuit; The other end of resistance R 1 links to each other with an end of resistance R 2, the 2nd pin of operational amplifier IC1, the other end connection circuit ground GND of resistance R 2.
3. fourth gear self-locking interlock switch circuit according to claim 1 is characterized in that: the structure and the element connected mode of second grade and other two grades of self-locking interlock switch circuit are identical with first grade of self-locking interlock switch circuit structure and element connected mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100369587A CN102594316A (en) | 2012-02-17 | 2012-02-17 | Four-gear self-locking interlocking switch circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100369587A CN102594316A (en) | 2012-02-17 | 2012-02-17 | Four-gear self-locking interlocking switch circuit |
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| Publication Number | Publication Date |
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| CN102594316A true CN102594316A (en) | 2012-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012100369587A Pending CN102594316A (en) | 2012-02-17 | 2012-02-17 | Four-gear self-locking interlocking switch circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105900338A (en) * | 2013-12-18 | 2016-08-24 | 分子间公司 | Resistive switching schmitt triggers and comparator |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05300398A (en) * | 1992-04-21 | 1993-11-12 | Fujitsu General Ltd | Pll circuit |
| CN201557093U (en) * | 2009-12-08 | 2010-08-18 | 佛山市顺德区和而泰电子科技有限公司 | Electronic self-locking circuit and device |
| CN102136834A (en) * | 2011-02-28 | 2011-07-27 | 黄宇嵩 | Electronic self-locking/interlocking switch |
-
2012
- 2012-02-17 CN CN2012100369587A patent/CN102594316A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05300398A (en) * | 1992-04-21 | 1993-11-12 | Fujitsu General Ltd | Pll circuit |
| CN201557093U (en) * | 2009-12-08 | 2010-08-18 | 佛山市顺德区和而泰电子科技有限公司 | Electronic self-locking circuit and device |
| CN102136834A (en) * | 2011-02-28 | 2011-07-27 | 黄宇嵩 | Electronic self-locking/interlocking switch |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105900338A (en) * | 2013-12-18 | 2016-08-24 | 分子间公司 | Resistive switching schmitt triggers and comparator |
| CN105900338B (en) * | 2013-12-18 | 2019-01-08 | 分子间公司 | Resistive Schmidt trigger and comparator |
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Application publication date: 20120718 |