CN208568901U - A kind of inductive ac rheoscope - Google Patents
A kind of inductive ac rheoscope Download PDFInfo
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- CN208568901U CN208568901U CN201821155451.2U CN201821155451U CN208568901U CN 208568901 U CN208568901 U CN 208568901U CN 201821155451 U CN201821155451 U CN 201821155451U CN 208568901 U CN208568901 U CN 208568901U
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- 230000001939 inductive effect Effects 0.000 title claims abstract description 26
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000011889 copper foil Substances 0.000 claims abstract description 11
- 239000003990 capacitor Substances 0.000 claims description 44
- 230000005611 electricity Effects 0.000 claims description 5
- 238000001514 detection method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 230000003760 hair shine Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000000554 physical therapy Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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Abstract
A kind of inductive ac rheoscope, its is easy to use, the presence of alternating current can accurately be detected, safety is good comprising pcb board is provided with receiving antenna on pcb board, receiving antenna is copper foil, the input terminal of amplifying circuit, input terminal, that is, antennal interface ANT are received using copper foil as inductive signal on pcb board, the output end that inductive signal receives amplifying circuit is separately connected the input terminal of buzzer sounding driving circuit, LED light emission drive circuit.
Description
Technical field
The utility model patent is related to alternating current detection technique field, specially a kind of inductive ac rheoscope.
Background technique
Alternating current is detected frequently with exchange rheoscope in electronics industry, is using more exchange rheoscope at present
Contact is commonly called as " electroprobe ", its using priciple requires electroprobe to must reach over to phase line, i.e. firewire, but in contactless field
Conjunction just seems helpless, and for the detection of High Level AC Voltage, carries out electromagnetism using the exchange rheoscope of contact
There is very big use limitation in the detection of radiation signal, contact exchanges rheoscope and man-hour manually hand-held electroprobe is needed to test behaviour
Make, it is complicated for operation, and there are huge security risks.
Inductive ac rheoscope, without contact phase line, the electromagnetic radiation using alternating current in space, received through antenna,
Filtering, amplification, control LED shines and buzzer sounding, and the presence of alternating current is detected with this.Detection for High Level AC Voltage
For, inductive ac rheoscope is easy to use, and safety is good.
Utility model content
Contactless occasion is not suitable for for contact existing in the prior art exchange rheoscope, it is multiple using operation
Miscellaneous and there are problems that security risk, the utility model provides a kind of inductive ac rheoscope, easy to use, can be accurate
The presence of alternating current is detected, safety is good.
A kind of inductive ac rheoscope comprising pcb board is provided with receiving antenna on the pcb board, and feature exists
In, the receiving antenna is copper foil, the input terminal of amplifying circuit is received using the copper foil as inductive signal on the pcb board,
The input terminal, that is, antennal interface ANT, the output end that the inductive signal receives amplifying circuit are separately connected the drive of buzzer sounding
The input terminal of dynamic circuit, LED light emission drive circuit.
It is further characterized by it includes the antennal interface ANT, the antenna that the inductive signal, which receives amplifying circuit,
Interface ANT is separately connected the cathode of the base stage of triode Q1, diode D1, the plus earth of the diode D1, three pole
The collector of pipe Q1 be separately connected the one end resistance R14, the one end R1, triode Q7 collector, the emitter of the triode Q1
The base stage of the triode Q7, the emitter ground connection of the triode Q7 are connected, the other end of the resistance R14 is separately connected 3V
Voltage source, one end of resistance R9, R10, R2, diode D2 anode, the cathode of the diode D2 is separately connected triode Q3
Emitter, resistance R3 one end, the other end of the circuit R3 be separately connected the base stage of triode Q3, the resistance R1 it is another
One end, the collector of the triode Q3 are separately connected one end of one end of capacitor C3, resistance R4, R15, and the capacitor C3's is another
One end ground connection；
The buzzer sounding driving circuit includes described resistance R4, R9, R10, and the other end of the resistance R4 connects respectively
One end of the collector of triode Q4, one end of resistance R6, capacitor C5 are connect, the emitter of the triode Q4 is grounded, and described three
The base stage of pole pipe Q4 is separately connected one end of one end of resistance R12, capacitor C4, and the other end of the capacitor C4 is separately connected described
One end of the other end of capacitor C5, resistance R7, the other end ground connection of the resistance R7, the other end of the resistance R12 connect electricity
One end of R5 is hindered, the other end of the resistance R5 is separately connected one end of the other end of the resistance R6, capacitor C7, C6, described
The other end of capacitor C6 is grounded, one end of the other end connection resistance R8 of the capacitor C7, the other end difference of the resistance R8
The other end of resistance R9, the base stage of triode Q5 are connected, the base stage of the emitter connecting triode Q6 of the triode Q5 is described
The emitter of triode Q6 is grounded, and the triode Q6 collector is separately connected the collector of the triode Q5, resistance R13
One end, buzzer BZ1 one end, the other end of the buzzer BZ1 is separately connected the other end of the resistance R10, resistance R13
The other end, capacitor C8 the other end, the capacitor C8 the other end ground connection；
The LED light emission drive circuit includes described resistance R15, R2, the other end connecting triode Q2 of the resistance R15
Base stage, the triode Q2 emitter ground connection, the collector of the triode Q2 be separately connected Light-emitting diode LED 1,
One end of the cathode of LED2, LED3, capacitor C2, the other end ground connection of the capacitor C2, the Light-emitting diode LED 1, LED2,
The other end of the resistance R2 is connected after the anode connection of LED3.
Using can reach following technical effect after the above-mentioned technical proposal of the utility model: thering is alternating current to deposit in alternating current circuit
Electromagnetic wave will be being generated, when rheoscope is close to alternating current, copper foil can sense 50Hz as antennal interface ANT on pcb board
Ac signal, the distance that voltage is higher, close is closer, and inductive signal is stronger, the electromagnetism spoke using alternating current in space
It penetrates, is received through antennal interface ANT, sensed receiver amplifier is filtered, amplifies, and drives electricity through buzzer sounding
Road controls buzzer sounding, shines through LED light emission drive circuit control LED, the presence of alternating current is detected with this, uses copper foil
As the electromagnetic wave in antenna induction alternating current, effectively prevents rheoscope and directly contact phase line, it is easy to use, and can be accurate
The presence of alternating current is detected, safety is good.
Detailed description of the invention
Fig. 1 is the annexation figure of each circuit of the utility model；
Fig. 2 is that the inductive signal of the utility model receives the circuit diagram of amplifying circuit；
Fig. 3 is the circuit diagram of the buzzer sounding driving circuit of the utility model；
Fig. 4 is the circuit diagram of the LED light emission drive circuit of the utility model.
Specific embodiment
As shown in Figure 1, a kind of inductive ac rheoscope comprising pcb board (is not drawn into) in figure, is provided on pcb board
Receiving antenna, receiving antenna are copper foil 1, and copper foil 1 is received to the input terminal of amplifying circuit, input as inductive signal on pcb board
End is antennal interface ANT, and the output end that inductive signal receives amplifying circuit 2 is separately connected buzzer sounding driving circuit 3, LED
The input terminal of light emission drive circuit 4；
As shown in Fig. 2, it includes antennal interface ANT that inductive signal, which receives amplifying circuit 2, antennal interface ANT is separately connected three
The cathode of the base stage of pole pipe Q1, diode D1, the collector of the plus earth of diode D1, triode Q1 are separately connected resistance
The one end R14, the one end R1, triode Q7 collector, the base stage of the emitter connecting triode Q7 of triode Q1, triode Q7's
Emitter ground connection, the other end of resistance R14 are separately connected the sun of 3V voltage source, one end of resistance R9, R10, R2, diode D2
Pole, the cathode of diode D2 are separately connected one end of the emitter of triode Q3, resistance R3, and the other end of circuit R3 is separately connected
The other end of the base stage of triode Q3, resistance R1, the collector of triode Q3 are separately connected one end of capacitor C3, resistance R4, R15
One end, capacitor C3 the other end ground connection；
As shown in figure 3, buzzer sounding driving circuit 3 includes resistance R4, R9, R10, the other end of resistance R4 is separately connected
The collector of triode Q4, one end of resistance R6, capacitor C5 one end, triode Q4 emitter ground connection, the base of triode Q4
Pole is separately connected one end of one end of resistance R12, capacitor C4, and the other end of capacitor C4 is separately connected the other end of capacitor C5, electricity
Hinder one end of R7, the other end ground connection of resistance R7, one end of the other end connection resistance R5 of resistance R12, the other end of resistance R5
It is separately connected the other end of resistance R6, one end of capacitor C7, C6, the other end ground connection of capacitor C6, the other end connection of capacitor C7
One end of resistance R8, the other end of resistance R8 are separately connected the base stage of the other end of resistance R9, triode Q5, the hair of triode Q5
The base stage of emitter-base bandgap grading connecting triode Q6, the emitter ground connection of triode Q6, triode Q6 collector are separately connected triode Q5's
Collector, one end of resistance R13, buzzer BZ1 one end, the other end of buzzer BZ1 is separately connected the another of resistance R10
End, the other end of the other end of resistance R13, capacitor C8, the other end ground connection of capacitor C8；
As shown in figure 4, LED light emission drive circuit 4 includes resistance R15, R2, the other end connecting triode Q2 of resistance R15
Base stage, the emitter ground connection of triode Q2, the collector of triode Q2 is separately connected Light-emitting diode LED 1, LED2, LED3
Cathode, capacitor C2 one end, capacitor C2 the other end ground connection, Light-emitting diode LED 1, LED2, LED3 anode connection after connect
The other end of connecting resistance R2.
That the specific working principle is as follows is described for it: the utility model being applied on high potential Physiotherapy chair, when rheoscope is close
When alternating current, copper foil can sense the ac signal of 50Hz as receiving antenna, and the distance that voltage is higher, close is closer, sense
Induction signal is stronger.When rheoscope is close to alternating current, the antennal interface ANT that inductive signal receives in amplifying circuit 2 can be received
The ac signal for sensing 50Hz amplifies through triode Q1, Q7, generates the just profound wave signal of direct current in the base stage of triode Q3,
The collector of triode Q3 filters the electric signal for generating and needing through capacitor C3, and the signal received is stronger, triode Q3 collector
Voltage effective value it is bigger, when nearby without alternating current or apart from it is too far when, the signal received is too weak, is not enough to open
Triode Q1, Q7, Q3 cut-off just generate without electric signal in the collector of triode Q3, adjust the amplification of triode Q1 and Q7
Multiple is used to adjust the detection sensitivity of rheoscope；
Buzzer sounding driving circuit 3 includes just profound resonant circuit, i.e. RC resonance circuit, for driving buzzer BZ1
Sounding, buzzer sounding driving circuit 3 receive the amplified signal of sensed receiver amplifier 2 by R4 as input
Source, RC resonance circuit have telecommunications by resistance R5, R6, R7, capacitor C4, C5, C6 and triode Q4 composition, the collector of triode Q4
Number when, first to capacitor C6 charge, then to capacitor C4 charge, when meeting triode Q4 saturation conduction, triode Q4 base stage
Place's voltage starts to discharge by capacitor C6, C5, so as to form oscillation, generates the just profound wave of direct current by capacitance C7, amplitude is big
Small related with amplified electric signal is received, driving triode Q5 and Q6 Darlington controls buzzer BZ1 sounding, can basis
The height of buzzer BZ1 sound size judgement alternating voltage；
The luminous indicating circuit 4 of LED receives the amplified signal of sensed receiver amplifier 2 and is driven by resistance R15
Dynamic triode Q2, the strong and weak driving triode Q2 of signal are also to be off shape for saturation conduction state, unsaturated on state
State limits 3 Light-emitting diode LED 1, the conducting electric current of LED2, LED3 with this, thus determine Light-emitting diode LED 1, LED2,
The brightness of LED3 determines the height of alternating voltage by the brightness of Light-emitting diode LED 1, LED2, LED3.
Claims (3)
1. a kind of inductive ac rheoscope comprising pcb board is provided with receiving antenna on the pcb board, which is characterized in that
The receiving antenna is copper foil, and the input terminal of amplifying circuit is received using the copper foil as inductive signal on the pcb board, described
Input terminal, that is, antennal interface ANT, the output end that the inductive signal receives amplifying circuit are separately connected buzzer sounding driving electricity
Road, LED light emission drive circuit input terminal, it includes the antennal interface ANT, the day that the inductive signal, which receives amplifying circuit,
Line interface ANT is separately connected the cathode of the base stage of triode Q1, diode D1, the plus earth of the diode D1, and described three
The collector of pole pipe Q1 be separately connected the one end resistance R14, the one end R1, triode Q7 collector, the transmitting of the triode Q1
Pole connects the base stage of the triode Q7, the emitter ground connection of the triode Q7, and the other end of the resistance R14 is separately connected
3V voltage source, one end of resistance R9, R10, R2, diode D2 anode, the cathode of the diode D2 is separately connected triode
One end of the emitter of Q3, resistance R3, the other end of the circuit R3 are separately connected the base stage of triode Q3, the resistance R1
The other end, the collector of the triode Q3 are separately connected one end of one end of capacitor C3, resistance R4, R15, the capacitor C3's
Other end ground connection.
2. a kind of inductive ac rheoscope according to claim 1, which is characterized in that the buzzer sounding driving electricity
Road includes described resistance R4, R9, R10, the other end of the resistance R4 be separately connected the collector of triode Q4, resistance R6 one
It holds, one end of capacitor C5, the emitter ground connection of the triode Q4, the base stage of the triode Q4 is separately connected resistance R12's
One end, capacitor C4 one end, the other end of the capacitor C4 is separately connected one end of the other end of the capacitor C5, resistance R7,
The other end of the resistance R7 is grounded, one end of the other end connection resistance R5 of the resistance R12, the other end of the resistance R5
It is separately connected the other end of the resistance R6, one end of capacitor C7, C6, the other end ground connection of the capacitor C6, the capacitor C7
Other end connection resistance R8 one end, the other end of the resistance R8 is separately connected the other end of resistance R9, triode Q5
Base stage, the base stage of the emitter connecting triode Q6 of the triode Q5, the emitter ground connection of the triode Q6, three pole
Pipe Q6 collector is separately connected one end of the collector of the triode Q5, one end of resistance R13, buzzer BZ1, the buzzing
The other end of device BZ1 is separately connected the other end of the resistance R10, the other end of the other end of resistance R13, capacitor C8, described
The other end of capacitor C8 is grounded.
3. a kind of inductive ac rheoscope according to claim 2, which is characterized in that the LED light emission drive circuit
Including described resistance R15, R2, the base stage of the other end connecting triode Q2 of the resistance R15, the emitter of the triode Q2
Ground connection, the collector of the triode Q2 are separately connected one end of Light-emitting diode LED 1, the cathode of LED2, LED3, capacitor C2,
The other end of the capacitor C2 is grounded, the Light-emitting diode LED 1, LED2, LED3 anode connection after connect the resistance R2
The other end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821155451.2U CN208568901U (en) | 2018-07-20 | 2018-07-20 | A kind of inductive ac rheoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821155451.2U CN208568901U (en) | 2018-07-20 | 2018-07-20 | A kind of inductive ac rheoscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208568901U true CN208568901U (en) | 2019-03-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821155451.2U Active CN208568901U (en) | 2018-07-20 | 2018-07-20 | A kind of inductive ac rheoscope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208568901U (en) |
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2018
- 2018-07-20 CN CN201821155451.2U patent/CN208568901U/en active Active
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