CN107644517A - A kind of electrostatic detection sound light alarming circuit - Google Patents
A kind of electrostatic detection sound light alarming circuit Download PDFInfo
- Publication number
- CN107644517A CN107644517A CN201710893037.5A CN201710893037A CN107644517A CN 107644517 A CN107644517 A CN 107644517A CN 201710893037 A CN201710893037 A CN 201710893037A CN 107644517 A CN107644517 A CN 107644517A
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- China
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- triode
- speech chip
- alarming circuit
- sound light
- light alarming
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Abstract
The invention discloses a kind of electrostatic detection sound light alarming circuit, FET T1, detection sheet metal form electrostatic induction sensor, triode, light emitting diode, speech chip form sound light alarming circuit, when can have electrostatic around finding, send sound and light alarm, after reminding user to avoid electrostatic, measure again, guarantee measuring accuracy, circuit is simple, cost is cheap, has a good application prospect.
Description
Technical field
The present invention relates to electronic measurement circuit technical field, and in particular to a kind of electrostatic detection sound light alarming circuit.
Background technology
Electronic metering equipment, in measurement process, when easily being disturbed by ambient static electricity, measuring accuracy can be influenceed,
, it is necessary to avoid the influence of electrostatic during measurement, when electrostatic produces, how the very first time finds, is to be currently needed for solving the problems, such as.
The content of the invention
The purpose of the present invention is to overcome existing in measurement process, when easily being disturbed by ambient static electricity, can influence to survey
Accuracy is measured, in measurement, it is necessary to the problem of avoiding electrostatic.The electrostatic detection sound light alarming circuit of the present invention, can find
When surrounding has electrostatic, sound and light alarm is sent, after reminding user to avoid electrostatic, then is measured, ensures measuring accuracy, circuit
Simply, cost is cheap, has a good application prospect.
In order to achieve the above object, the technical solution adopted in the present invention is：
A kind of electrostatic detection sound light alarming circuit, it is characterised in that：Including FET T1, speech chip U1 and battery G1,
The positive pole of the battery G1 is in series with switch S1, the switch S1 one end with loudspeaker B1, light emitting diode D1 respectively
Positive pole, resistance R1 one end are connected, and the other end of the resistance R1 is connected with FET T1 source electrode, the field-effect
Pipe T1 grid is connected with detection sheet metal M1, and the drain electrode of the FET T1 is connected with triode Q1 base stage, institute
The emitter stage for stating triode Q1 is connected with battery G1 negative pole, and the negative pole of the battery G1 is connected to the ground, and described three
Pole pipe Q1 colelctor electrode is connected with speech chip U1 VSS terminal, TG terminals and the speech chip U1 of the speech chip U1
VDD terminal be connected, the VDD terminal of the speech chip U1 is also connected by resistance R2 with speech chip U1 OSC terminals
Connect, the negative pole of the VDD terminal of the speech chip U1 also with light emitting diode D1 is connected, the O/P ends of the speech chip U1
Son is connected with triode Q2 base stage, and the emitter stage of the triode Q2 is connected to the ground, the colelctor electrode of the triode Q1
It is connected with the loudspeaker B1 other end.
A kind of foregoing electrostatic detection sound light alarming circuit, it is characterised in that：The switch S1 is also with polar capacitor C1's
Positive pole is connected, and the negative pole of the polar capacitor C1 is connected to the ground.
A kind of foregoing electrostatic detection sound light alarming circuit, it is characterised in that：The model BS250 of the FET T1
FET.
A kind of foregoing electrostatic detection sound light alarming circuit, it is characterised in that：The triode Q1, triode Q2 are
NPN type triode.
A kind of foregoing electrostatic detection sound light alarming circuit, it is characterised in that：The model of the speech chip U1
HFC5212 speech chips.
A kind of foregoing electrostatic detection sound light alarming circuit, it is characterised in that：Between the positive and negative electrode of the battery G1
Voltage is 5V.
A kind of foregoing electrostatic detection sound light alarming circuit, it is characterised in that：The detection sheet metal M1 uses copper sheet system
Into.
The beneficial effects of the invention are as follows：The electrostatic detection sound light alarming circuit of the present invention, FET T1, detection sheet metal
Electrostatic induction sensor is formed, triode, light emitting diode, speech chip form sound light alarming circuit, can be around finding
When electrostatic be present, sound and light alarm is sent, after reminding user to avoid electrostatic, then is measured, ensures measuring accuracy, circuit letter
Single, cost is cheap, has a good application prospect.
Brief description of the drawings
Fig. 1 is the circuit diagram of the electrostatic detection sound light alarming circuit of the present invention.
Embodiment
Below in conjunction with Figure of description, the present invention is further illustrated.
As shown in figure 1, the electrostatic detection sound light alarming circuit of the present invention, including FET T1, speech chip U1 and storage
Battery G1, the battery G1 positive pole are in series with switch S1, the switch S1 one end with loudspeaker B1, light-emitting diodes respectively
Pipe D1 positive pole, resistance R1 one end are connected, and the other end of the resistance R1 is connected with FET T1 source electrode, described
FET T1 grid is connected with detection sheet metal M1, and the drain electrode of the FET T1 is connected with triode Q1 base stage
Connect, the emitter stage of the triode Q1 is connected with battery G1 negative pole, and the negative pole of the battery G1 is connected to the ground, institute
The colelctor electrode for stating triode Q1 is connected with speech chip U1 VSS terminal, TG terminals and the voice core of the speech chip U1
Piece U1 VDD terminal is connected, and the VDD terminal of the speech chip U1 also passes through resistance R2 and speech chip U1 OSC terminals
It is connected, the negative pole of the VDD terminal of the speech chip U1 also with light emitting diode D1 is connected, the O/ of the speech chip U1
P terminals are connected with triode Q2 base stage, and the emitter stage of the triode Q2 is connected to the ground, the current collection of the triode Q1
Pole is connected with the loudspeaker B1 other end.
Preferably, positive poles of the switch S1 also with polar capacitor C1 is connected, negative pole and the ground of the polar capacitor C1
Be connected, can filtering clutter, ensure power supply reliability.
Preferably, the model BS250 FETs of the FET T1, coordinate detection sheet metal M1, form electrostatic
Inductive pick-up, detection sheet metal M1 here are made of copper sheet, and conductive effect is good.
Preferably, the triode Q1, triode Q2 are NPN type triode.
Preferably, the model HFC5212 speech chips of the speech chip U1, trigger work after, can send too
Alarm, and light light emitting diode D1, realize sound and light alarm.
Preferably, voltage between the positive and negative electrode of the battery G1 be 5V, whole circuit power consumption is low.
The electrostatic detection sound light alarming circuit of the present invention, operation principle are as follows：
FET T1, detection sheet metal M1 form electrostatic induction sensor, triode Q1, Q2, light emitting diode D1, voice core
Piece U1 forms sound light alarming circuit, when can have electrostatic around finding, FET T1 conductings, is triggered by triode Q1
Speech chip U1 is operated, and optical diode D1 is lighted first, and speech chip U1 output signal passes through three poles by O/P terminals
After pipe Q2 amplifications, drive the speaker B1 sends too alarm, so as to realize sound and light alarm.
In summary, electrostatic detection sound light alarming circuit of the invention, FET T1, detection sheet metal form electrostatic sense
Inductive sensing device, triode, light emitting diode, speech chip form sound light alarming circuit, when can have electrostatic around finding,
Sound and light alarm is sent, after reminding user to avoid electrostatic, then is measured, ensures measuring accuracy, circuit is simple, and cost is cheap,
Have a good application prospect.
General principle, the main features and advantages of the present invention have been shown and described above.The technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, the original for simply illustrating the present invention described in above-described embodiment and specification
Reason, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes and improvements
It all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and its equivalent circle
It is fixed.
Claims (7)
- A kind of 1. electrostatic detection sound light alarming circuit, it is characterised in that：Including FET T1, speech chip U1 and battery G1, the battery G1 positive pole are in series with switch S1, the switch S1 one end with loudspeaker B1, light emitting diode D1 respectively Positive pole, resistance R1 one end be connected, the other end of the resistance R1 is connected with FET T1 source electrode, field effect Should pipe T1 grid with detection sheet metal M1 be connected, the drain electrode of the FET T1 is connected with triode Q1 base stage, The emitter stage of the triode Q1 is connected with battery G1 negative pole, and the negative pole of the battery G1 is connected to the ground, described Triode Q1 colelctor electrode is connected with speech chip U1 VSS terminal, the TG terminals and speech chip of the speech chip U1 U1 VDD terminal is connected, and the VDD terminal of the speech chip U1 also passes through resistance R2 and speech chip U1 OSC terminal phases Connection, the negative pole of the VDD terminal of the speech chip U1 also with light emitting diode D1 are connected, the O/P of the speech chip U1 Terminal is connected with triode Q2 base stage, and the emitter stage of the triode Q2 is connected to the ground, the current collection of the triode Q1 Pole is connected with the loudspeaker B1 other end.
- A kind of 2. electrostatic detection sound light alarming circuit according to claim 1, it is characterised in that：The switch S1 also with pole Property electric capacity C1 positive pole is connected, and the negative pole of the polar capacitor C1 is connected to the ground.
- A kind of 3. electrostatic detection sound light alarming circuit according to claim 1, it is characterised in that：The FET T1's Model BS250 FETs.
- A kind of 4. electrostatic detection sound light alarming circuit according to claim 1, it is characterised in that：The triode Q1, three Pole pipe Q2 is NPN type triode.
- A kind of 5. electrostatic detection sound light alarming circuit according to claim 1, it is characterised in that：The speech chip U1's Model HFC5212 speech chips.
- A kind of 6. electrostatic detection sound light alarming circuit according to claim 1, it is characterised in that：The battery G1's Voltage between positive and negative electrode is 5V.
- A kind of 7. electrostatic detection sound light alarming circuit according to claim 1, it is characterised in that：The detection sheet metal M1 It is made of copper sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710893037.5A CN107644517A (en) | 2017-09-27 | 2017-09-27 | A kind of electrostatic detection sound light alarming circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710893037.5A CN107644517A (en) | 2017-09-27 | 2017-09-27 | A kind of electrostatic detection sound light alarming circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107644517A true CN107644517A (en) | 2018-01-30 |
Family
ID=61111403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710893037.5A Withdrawn CN107644517A (en) | 2017-09-27 | 2017-09-27 | A kind of electrostatic detection sound light alarming circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107644517A (en) |
-
2017
- 2017-09-27 CN CN201710893037.5A patent/CN107644517A/en not_active Withdrawn
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180130 |
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| WW01 | Invention patent application withdrawn after publication |