CN102497180A - Emergency stop status releasing reset control circuit - Google Patents
Emergency stop status releasing reset control circuit Download PDFInfo
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- CN102497180A CN102497180A CN2011103840286A CN201110384028A CN102497180A CN 102497180 A CN102497180 A CN 102497180A CN 2011103840286 A CN2011103840286 A CN 2011103840286A CN 201110384028 A CN201110384028 A CN 201110384028A CN 102497180 A CN102497180 A CN 102497180A
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- trigger
- triode
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Abstract
The invention discloses an emergency stop status releasing reset control circuit, which mainly comprises an emergency stop control button, a key reset switch and a trigger. During normal operation, the emergency stop control button and the key reset switch are both in closed state, and an in-phase output end of the trigger is a low level. Compared with a comparator with the other end connected with a voltage regulating tube, the output is normal through the effect of a triode. When the emergency stop control button is opened, a clock signal entering the trigger through an NAND gate is a high level, and the in-phase output end of the trigger is a high level. The output is abnormal through the effect of the comparator and the triode, at present, the emergency stop button is closed firstly, the key reset switch is opened first and then closed, and the output can return to normal. The emergency stop status releasing reset control circuit can avoid device damage, personal risks and other unsafe factors caused by a control system after the emergency stop button is reset by mistake, and is suitable for a laser treatment system.
Description
Technical field
The present invention relates to a kind of control circuit that promptly stops in the laser therapeutic system that makes, particularly relate to the anxious control circuit that state release resets that stops.
Background technology
For a long time, in laser therapeutic system, when pressing scram button, laser therapeutic system is all taked a series of safety precautions to current emergency.But generally after scram button is reset, laser therapeutic system can think that the state of emergency removes, and can come back in the original state, can cause misoperation like this, produces unsafe factor.
Summary of the invention
For overcoming deficiency of the prior art, the object of the present invention is to provide a kind of urgency to stop the state release reset control circuit, prevent damage equipment and personal unsafe factors such as danger that laser therapeutic system is brought after scram button is by erroneous resets.
For realizing above-mentioned technical purpose, reach above-mentioned technique effect, the present invention has adopted following technical scheme:
A kind of urgency is stopped the state release reset control circuit; It mainly comprises anxious control button, a key reset switch and the trigger of stopping; First pin that said urgency is stopped control button connects second input of a NAND gate and is connected to power supply; Second pin connects the first input end of said NAND gate and passes through first grounding through resistance; The output of said NAND gate connects the clock signal terminal of said trigger, and the in-phase output end of said trigger connects the in-phase input end of first comparator, and the output of said first comparator connects the base stage of first triode; The grounded emitter ground of said first triode, the inverting input of said first comparator connects power supply through a voltage-stabiliser tube ground connection and through one the 3rd resistance; First pin of said key reset switch connects power supply; Second pin connects the input of a not gate and passes through second grounding through resistance; The output of said not gate connects the in-phase input end of second comparator; The inverting input of said second comparator connects the inverting input of said first comparator, and the output of said second comparator connects the base stage of second triode, the grounded emitter of said second triode; The collector electrode of said first triode and second triode links together as output; The triggering signal end of said trigger and control end are connected to first pin that said urgency is stopped control button respectively, and the reset signal end of said trigger is connected to the input of said not gate.
Adopt after the foregoing circuit; After emergency is eliminated; Need the key reset switch is broken off earlier after closure is confirmed again; Can laser therapeutic system be removed suddenly and stop state, get back to normal output state, can overcome the existence of the unsafe factor that brings owing to misoperation in the prior art so effectively.
Operation principle of the present invention is following:
When urgency of the present invention is stopped state release reset control circuit operate as normal; Urgency stops control button and the key reset switch all is in closure state; The in-phase output end of trigger is a low level, compares with the comparator that the other end is connected to voltage-stabiliser tube this moment and the effect through triode makes output normal; When suddenly stopping the control button disconnection; The clock signal that gets into trigger through NAND gate is a high level, thereby the in-phase output end of trigger is a high level, makes output abnormality through the effect of comparator and triode; At this moment; Earlier urgency is stopped the control button closure, again the key reset switch is broken off closure more earlier, can recover normal output state.
Compared with prior art, the present invention has the following advantages:
Urgency of the present invention is stopped the state release reset control circuit and is had the advantage that circuit is simple, element is few, easy to use, and can overcome the existence of the unsafe factor that brings owing to misoperation in the prior art effectively.
Above-mentioned explanation only is the general introduction of technical scheme of the present invention, understands technological means of the present invention in order can more to know, and can implement according to the content of specification, below with preferred embodiment of the present invention and conjunction with figs. specify as after.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is a circuit theory sketch map of the present invention.
Embodiment
Below with reference to accompanying drawing and combine embodiment, specify the present invention.
Referring to shown in Figure 1; A kind of urgency is stopped the state release reset control circuit; It mainly comprises anxious control button SW1, a key reset switch SW2 and the trigger U2 of stopping; First pin that said urgency is stopped control button SW1 connects second input of a NAND gate U1 and is connected to power supply, and second pin connects the first input end of said NAND gate U2 and pass through first resistance R, 1 ground connection, and the output of said NAND gate U1 connects the clock signal terminal CLK of said trigger U2; The in-phase output end Q of said trigger U2 connects the in-phase input end of the first comparator U4; The output of the said first comparator U4 connects the base stage of the first triode Q1, the grounded emitter ground of the said first triode Q1, and the inverting input of the said first comparator U4 connects power supply through a voltage-stabiliser tube U6 ground connection and through one the 3rd resistance; First pin of said key reset switch SW2 connects power supply; Second pin connects the input of a not gate U3 and passes through second resistance R, 2 ground connection; The output of said not gate U3 connects the in-phase input end of the second comparator U5; The inverting input of the said second comparator U5 connects the inverting input of the said first comparator U4, and the output of the said second comparator U5 connects the base stage of the second triode Q2, the grounded emitter of the said second triode Q2; The collector electrode of the said first triode Q1 and the second triode Q2 links together as output; The triggering signal end D of said trigger U2 and control end
are connected to first pin that said urgency is stopped control button SW1 respectively, and the reset signal end of said trigger U2
is connected to the input of said not gate U3.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (1)
1. a urgency is stopped the state release reset control circuit; It is characterized in that: mainly comprise anxious control button (SW1), a key reset switch (SW2) and the trigger (U2) of stopping; First pin that said urgency is stopped control button (SW1) connects second input of a NAND gate (U1) and is connected to power supply; Second pin connects the first input end of said NAND gate (U2) and passes through first resistance (R1) ground connection; The output of said NAND gate (U1) connects the clock signal terminal (CLK) of said trigger (U2); The in-phase output end (Q) of said trigger (U2) connects the in-phase input end of first comparator (U4); The output of said first comparator (U4) connects the base stage of first triode (Q1), the grounded emitter ground of said first triode (Q1), and the inverting input of said first comparator (U4) connects power supply through a voltage-stabiliser tube (U6) ground connection and through one the 3rd resistance; First pin of said key reset switch (SW2) connects power supply; Second pin connects the input of a not gate (U3) and passes through second resistance (R2) ground connection; The output of said not gate (U3) connects the in-phase input end of second comparator (U5); The inverting input of said second comparator (U5) connects the inverting input of said first comparator (U4); The output of said second comparator (U5) connects the base stage of second triode (Q2), the grounded emitter of said second triode (Q2); Said first triode (Q1) links together as output with the collector electrode of second triode (Q2); The triggering signal end (D) of said trigger (U2) is connected to first pin that said urgency is stopped control button (SW1) respectively with control end (
), and the reset signal end of said trigger (U2) (
) is connected to the input of said not gate (U3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110384028 CN102497180B (en) | 2011-11-28 | 2011-11-28 | Emergency stop status releasing reset control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110384028 CN102497180B (en) | 2011-11-28 | 2011-11-28 | Emergency stop status releasing reset control circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102497180A true CN102497180A (en) | 2012-06-13 |
| CN102497180B CN102497180B (en) | 2013-06-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110384028 Active CN102497180B (en) | 2011-11-28 | 2011-11-28 | Emergency stop status releasing reset control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102497180B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1353973A (en) * | 2001-11-14 | 2002-06-19 | 岑志勇 | Device capable of holding telescopic semiconductor laser coupler |
| JP2011027621A (en) * | 2009-07-28 | 2011-02-10 | Mitsubishi Electric Corp | Clocking circuit |
| CN202334468U (en) * | 2011-11-28 | 2012-07-11 | 苏州生物医学工程技术研究所 | Sudden stop state releasing reset control circuit |
-
2011
- 2011-11-28 CN CN 201110384028 patent/CN102497180B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1353973A (en) * | 2001-11-14 | 2002-06-19 | 岑志勇 | Device capable of holding telescopic semiconductor laser coupler |
| JP2011027621A (en) * | 2009-07-28 | 2011-02-10 | Mitsubishi Electric Corp | Clocking circuit |
| CN202334468U (en) * | 2011-11-28 | 2012-07-11 | 苏州生物医学工程技术研究所 | Sudden stop state releasing reset control circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102497180B (en) | 2013-06-05 |
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