CN104424839A - Recognition and alarm circuit - Google Patents
Recognition and alarm circuit Download PDFInfo
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- CN104424839A CN104424839A CN201310410164.7A CN201310410164A CN104424839A CN 104424839 A CN104424839 A CN 104424839A CN 201310410164 A CN201310410164 A CN 201310410164A CN 104424839 A CN104424839 A CN 104424839A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/28—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for medicine
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Abstract
The invention provides a recognition and alarm circuit, mainly comprising 1-N comparison units, 1-N analog switch units and 1-N alarm units, wherein when the recognition and alarm circuit is powered by a power supply and a user uses a metal needle to puncture conductive fabrics, the comparison units electrically connected with the conductive fabrics work, and then the corresponding alarm units are triggered by the analog switch units to work to indicate whether the acupuncture is correct. When the user uses the point of the metal needle to puncture the 1-N layers of conductive fabrics, the comparison units and the alarm units start working. For example, when the second layer of conductive fabric is punctured while the third layer of conductive fabric is not punctured, the corresponding light emitting diodes or buzzers of the alarm units work to prompt whether the operation is correct.
Description
Technical field
The invention belongs to the built-in identification of medical teaching device and warning circuit, particularly relate to the identification in a kind of acupuncture instructional device and warning circuit.
Background technology
In acupuncture training instructional device in current teaching and clinic process, in acupuncture injection site, multilayer conductive cloth is housed, when pinprick is to conductive fabric, if depth of needling is correct, the green light of control circui lights or certain auditory tone cues, lights or certain audible alarm if dark red lantern festival is crossed in acupuncture.
What it adopted is resistance current limliting method principle.Because acupuncture simulated solution is aqueous medium, water is electric conductor, when toward acupuncture position (muscle layer as Muscle Simulation injection) injection water, although the conductive fabric second layer not yet pricked by pin, but due to the electric action of water, the direct conducting in upper and lower two-layer detection zone can be made, the resistance value in circuit can be changed simultaneously, easily affect testing result, make the mistake the phenomenons such as prompting, false alarm.Cause and detect accuracy lowly, error is large, and error rate uprises, and makes student be in the high environment of a kind of error rate and obtains the acupuncture technical ability praised, add the risk of clinical treatment and the occurrence probability of doctors and patients greatly.
More existing needled product, usually two-layer conductive fabric is settled at simulate muscular injecting layer, power supply is communicated with to conductive fabric, when metal needle punctures through two-layer conductive fabric respectively, the preset alarming device of this needled product can send the warning of " mistake " or " correctly ", but when there is a lot of simulate injection liquid between two-layer conductive fabric, two-layer conductive fabric can be connected equally, trigger attention device is started working, and now " rub-out signal " has been passed to the people using this product.
Summary of the invention
The object of the present invention is to provide the one identification for acupuncture instructional device and warning circuit, medico can be trained and grasps correct clinical skill.
A kind of identification and warning circuit, is characterized in that: comprise
1 ~ N number of comparing unit, mainly comprises a voltage comparator, is used for differentiating, with the voltage comparing two ends and input, to produce the input voltage of alarm unit simultaneously;
1 ~ N number of alarm unit, mainly comprises warning circuit and electronic warning element, after receiving comparing unit output voltage, trigger corresponding electronic warning element manipulation;
Described one identification and warning circuit also comprise the 1 ~ N number of analog switch unit controlling 1 ~ N number of alarm unit duty respectively;
Wherein said 1 ~ N number of comparing unit is connected in 1 ~ N number of alarm unit respectively respectively by 1 ~ N number of analog switch unit.
"+" input of described comparing unit is by electric resistance partial pressure, and "-" input connects conductivity detection end, exports and is connected with analog switch unit;
Described analog switch unit controls the current switching of alarm unit, and its break-make is determined by the output voltage of each voltage comparator;
Further,
Described analog switch unit adopts NPN triode;
Described analog switch unit can also adopt PNP triode;
The base stage of described analog switch unit is connected to next voltage comparator output terminal;
Described analog switch unit can also be that emitter-base bandgap grading is connected to next voltage comparator output terminal;
Current limiting resistance between the base stage of described analog switch unit and the output terminal of next voltage comparator;
Described analog switch unit, can also be emitter-base bandgap grading and next voltage comparator output terminal between current limiting resistance;
The base stage of described N number of analog switch unit or emitter grounding;
Described electronic warning element is light emitting diode;
Described electronic warning element can also be hummer.
When described one identification and the external conductive fabric of warning circuit, comparing unit and analog switch unit electrically connect with alarm unit again, and when user pierces through 1 ~ N layer conductive fabric with metal needle time, comparing unit and alarm unit are started working; When or not the 3rd layer of conductive fabric when being pierced through by the 2nd layer of conductive fabric, the corresponding light emitting diode of alarm unit or hummer work, whether prompting operation is correct.
Beneficial effect of the present invention is, the puncture technical ability that it can help students correct, avoids student to form the understanding of mistake and the technical ability of mistake.
Accompanying drawing explanation
Fig. 1: a kind of identification and warning circuit structure rough schematic.
Fig. 2: a kind of identification and the simple and easy schematic diagram of warning circuit circuit.
Fig. 3: a kind of identification and warning circuit circuit easy structure schematic diagram.
1, power supply; 2, multilayer conductive cloth; 3, comparing unit; 4, analog switch unit; 5, alarm unit.
Embodiment
Be described further below in conjunction with accompanying drawing.
As shown in Figure 3, a kind of identification and warning circuit, it mainly comprises 1 ~ N number of comparing unit 3,1 ~ N number of analog switch unit 4 and 1 ~ N number of alarm unit 5, when powering through power supply 1, when user uses metal needle to pierce through conductive fabric, the comparing unit 3 electrically connected with conductive fabric 2 works, and triggers corresponding alarm unit 5 subsequently work through analog switch unit 4, and whether instruction acupuncture is correct.
As shown in Figure 1, 2, public conductive fabric (P2.1) is connected on positive source, ground floor conductive fabric (P2.2) connects "+" end of voltage comparator (U1A), second layer conductive fabric (P2.3), zone errors/exclusion area conductive fabric (P2.4) connects "+" end of another voltage comparator (U1B), and supply voltage is connected on "-" end of each voltage comparator after electric resistance partial pressure.The voltage point to press out only need a little less than supply voltage.Two-stage voltage comparator is connected by triode between exporting, and exports and does not respectively disturb.
1st layer:
When pinprick is to ground floor, P2.2 and P2.1 conducting, the 3 pin voltages of U1 are supply voltage, are greater than the voltage of 2 pin, and 1 pin exports high level.Now toward the water filling of model position, the resistance between P2.2 and P2.3 can become large, as long as but do not prick the second layer, 5 pin voltages of comparer all can lower than 6 pin voltages, and 7 pin export as low.Now PNP triode Q2 conducting, C pin high level, D1 lamp is bright.Q1 not conducting, D3 does not work, and LS1 does not report to the police;
2nd layer:
When pinprick is to the second layer (or wrong layer), P2.3(or P2.4) and P2.1 conducting, 5 pin voltages of comparer are supply voltage, are greater than the voltage of 6 pin, and 7 pin export high level.Q1 conducting, the C end of Q1 is low level, and D3 lamp is bright, and LS1 reports to the police.Now the E end of Q2 is still high level, and R6 plays metering function, and the E end of Q2 and B terminal voltage difference are less than its forward voltage, then Q2 not conducting, and D1 lamp goes out;
Extend to multilayer, as shown in Figure 2:
The E pin of the 3rd layer: triode Q1 direct ground connection, but connect a current-limiting resistance and receive in the output of third level comparer again, the E of Q3 holds ground connection, and other is identical with the method for designing of second level comparer.Like this when third layer not yet pricked by pin, 10 pin of U1C can use resistance value to become large, 10 pin voltage <9 pin voltages due to injection, and 8 pin export as low level, and Q1 still conducting, Q3 not conducting, red light is still bright, and amber light does not work.Mistake is there will not be to indicate.When pinprick is to third layer, 10 pin (+) and the outermost layer conducting (voltage is 9V) of U1C, 9 pin are due to electric resistance partial pressure, and voltage <9V, 8 pin export high level, and Q3 conducting, D4 amber light is bright.Simultaneously because 8 pin and 7 pin are all high level, pressure reduction is not enough to allow Q1 conducting, and red light goes out;
The not direct ground connection of E pin of the 4th layer: triode Q3, connects a current-limiting resistance and receives in the output of fourth stage comparer again, with the connection of the third level.Principle is same.When pinprick is to the 4th layer, Lan Dengliang, amber light goes out.
When user pierces through 1 ~ N layer conductive fabric with metal needle time, comparing unit and alarm unit are started working.As: when or not the 3rd layer of conductive fabric when being pierced through by the 2nd layer of conductive fabric, the corresponding light emitting diode of alarm unit or hummer work, whether prompting operation is correct.
Above-mentionedly to set forth for 4 layers of conductive coating structure, but the circuit structure of the 5th layer and n-th layer and upper principle to be with postponing, but for by current powered battery, also not easily application to too many layer.
Claims (8)
1. identify and a warning circuit, it is characterized in that: comprise
1 ~ N number of comparing unit, mainly comprises a voltage comparator, and its "+" input is by electric resistance partial pressure, "-" input connects conductivity detection end, export and be connected with analog switch unit, be used for discriminating and the voltage comparing two ends and input, produce the input voltage of alarm unit simultaneously;
1 ~ N number of alarm unit, mainly comprises warning circuit and electronic warning element, after receiving comparing unit output voltage, trigger corresponding electronic warning element manipulation;
Described one identification and warning circuit also comprise the 1 ~ N number of analog switch unit controlling 1 ~ N number of alarm unit duty respectively, and control the current switching of alarm unit, its break-make is determined by the output voltage of each voltage comparator;
Wherein said 1 ~ N number of comparing unit is connected in 1 ~ N number of alarm unit respectively respectively by 1 ~ N number of analog switch unit.
2. one according to claim 1 identifies and warning circuit, it is characterized in that: described analog switch unit adopts NPN triode.
3. one according to claim 1 identifies and warning circuit, it is characterized in that: described analog switch unit can also adopt PNP triode.
4. the one identification according to claim 1,2,3 and warning circuit, is characterized in that: described analog switch base stage is connected to next voltage comparator output terminal.
5. the one identification according to claim 1,2,3 and warning circuit, is characterized in that: described analog switch can also be that emitter-base bandgap grading is connected to next voltage comparator output terminal.
6. one according to claim 1 identifies and warning circuit, it is characterized in that: the base stage of described N number of analog switch unit or emitter grounding.
7. one according to claim 1 identifies and warning circuit, it is characterized in that: described alarm unit is light emitting diode.
8. one according to claim 1 identifies and warning circuit, it is characterized in that: described alarm unit can also be hummer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310410164.7A CN104424839A (en) | 2013-09-11 | 2013-09-11 | Recognition and alarm circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310410164.7A CN104424839A (en) | 2013-09-11 | 2013-09-11 | Recognition and alarm circuit |
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| Publication Number | Publication Date |
|---|---|
| CN104424839A true CN104424839A (en) | 2015-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310410164.7A Pending CN104424839A (en) | 2013-09-11 | 2013-09-11 | Recognition and alarm circuit |
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| CN (1) | CN104424839A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105280070A (en) * | 2015-11-27 | 2016-01-27 | 深圳职业技术学院 | Simulation acupuncturing practice needle bag and manufacturing method thereof |
| CN107369368A (en) * | 2017-08-16 | 2017-11-21 | 天津天堰科技股份有限公司 | A kind of pneumothorax puncture operation judgment device |
-
2013
- 2013-09-11 CN CN201310410164.7A patent/CN104424839A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105280070A (en) * | 2015-11-27 | 2016-01-27 | 深圳职业技术学院 | Simulation acupuncturing practice needle bag and manufacturing method thereof |
| CN107369368A (en) * | 2017-08-16 | 2017-11-21 | 天津天堰科技股份有限公司 | A kind of pneumothorax puncture operation judgment device |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150318 |
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| WD01 | Invention patent application deemed withdrawn after publication |