CN207926608U - A kind of sweep-frequency Békésy audiometer Initiative Defense examination hall special equipment - Google Patents
A kind of sweep-frequency Békésy audiometer Initiative Defense examination hall special equipment Download PDFInfo
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- CN207926608U CN207926608U CN201820103628.8U CN201820103628U CN207926608U CN 207926608 U CN207926608 U CN 207926608U CN 201820103628 U CN201820103628 U CN 201820103628U CN 207926608 U CN207926608 U CN 207926608U
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Abstract
A kind of sweep-frequency Békésy audiometer Initiative Defense examination hall special equipment.The utility model is related to a kind of sweep-frequency Békésy audiometer Initiative Defense examination hall special equipments.The shell（3）Top setting hook（1）, the shell（3）Front surface top among be arranged camera（2）, the camera（2）Underface be arranged electronic clock（4）, the camera（2）Both sides a loudspeaker are respectively set（5）, the electronic clock（4）Lower right be arranged MP3 control buttons（6）.The utility model is used for sweep-frequency Békésy audiometer Initiative Defense examination hall special equipment.
Description
Technical field
The utility model is related to a kind of sweep-frequency Békésy audiometer Initiative Defense examination hall special equipments.
Background technology
Currently, what well known examination hall shielding instrument mainly shielded is mobile phone signal, the frequency range of hundreds of MHZ to thousands of MHZ is covered,
The signal of low-frequency range is almost interference-free.But many examination hall cheating instruments all receive examination using the channel of low-frequency range now
Answer is inscribed, existing equipment is difficult shielding, can only prevent cheating tool from entering examination hall by metal detector, process is very numerous
It is trivial.There are many classrooms simultaneously because being fitted without camera or voice cannot be played without having the condition as examination hall, this
Sample causes the selection in examination hall very limited, and encountering large-scale examination can cause examination hall short.In addition it such as encounters and shuts off power in emergency, it is existing to examine
Field device is paralysed substantially.
Invention content
The purpose of this utility model is to provide a kind of sweep-frequency Békésy audiometer Initiative Defense examination hall special equipment, in order to solve existing examination hall
Shielding instrument screening frequencies is limited in scope, and the defect that cannot be shielded the signal of low-frequency range and have a single function, the utility model provides
A kind of examination hall special equipment, the equipment are made of a kind of novel bikini capacitance oscillating circuit and peripheral auxiliary circuits, can be with
It realizes from several MHZ to the signal shielding of thousands of MHZ frequency ranges.And it is powered indirectly by lithium-ions battery, in power-off
In the case of can also realize the functions such as signal shielding, examination hall monitoring, voice broadcast, time showing.
Above-mentioned purpose is realized by following technical scheme：
A kind of sweep-frequency Békésy audiometer Initiative Defense examination hall special equipment, composition include：Hook 1, camera 2, shell 3 are described
Camera 2 is arranged in the top setting hook 1 of shell 3, the front surface top centre of the shell 3, and the camera 2 is just
Electronic clock 4 is arranged in lower section, and a loudspeaker 5, the bottom right of the electronic clock 4 is respectively set in the both sides of the camera 2
Side's setting MP3 control buttons 6,
Power switch 7 is arranged in the left side of the shell 3, and one group of USB interface is arranged in the bottom end of the power switch 7
8, socket port 9 is arranged in the lower section of the USB interface 8, and the lower section setting audio of the socket port 9 plays control button 10,
Detachable hanger 11 is arranged in the bottom end of the shell 3, and the detachable hanger 11 connects protecting crust 12；
Audio disturbances signal source and ladder wave generation circuit, the ladder wave generation circuit are packed into the shell 3
Staircase waveform is sent to varactor diode circuit, staircase waveform is transmitted to capacitance three-point type and vibrated by the varactor diode circuit
Circuit；
Interference signal source is transmitted to Colpitts oscillation circuit by the audio disturbances signal source.
A kind of sweep-frequency Békésy audiometer Initiative Defense examination hall special equipment, the one of the power supply V1 of the ladder wave generation circuit
No. 4 ends with transport and placing device U1 are held at No. 4 ends of end connection transport and placing device U3, No. 4 of transport and placing device U2,
One end of the other end connection power supply V2 of the power supply V1 and ground terminal, the other end connection of the power supply V2
No. 7 ends of transport and placing device U3, No. 7 ends of transport and placing device U2, No. 7 ends of transport and placing device U1,3 ends of transport and placing device U1, resistance R2 one end with
One end of resistance R3, the other end ground connection of the resistance R2, one end of the other end connection resistance R4 of the resistance R3, electricity
Hinder one end of R1, diode D1 one end and capacitance C2 one end, the one of the other end connection capacitance C9 of the resistance R1
It holds, 2 ends of one end and transport and placing device U1 of diode D6, the other end ground connection of the capacitance C9, the diode D1's is another
One end connects one end of diode D2, one end of the other end connection diode D4 of the diode D2, the diode
The other end of one end and capacitance C2 of the other end connection diode D3 of D4, the other end connection resistance R5 of the diode D3
One end, No. 2 ends of the other end connection transport and placing device U2 of the resistance R5, one end and the one of slide rheostat Q1 of capacitance C3
End, the other end of the other end connection capacitance C3 of the slide rheostat Q1, No. 6 ends and the one of resistance R3 of transport and placing device U2
End, one end of one end and diode D4 of the third end connection resistance R1 of the slide rheostat Q1, the diode D4
One end of other end connection resistance R9, diode D6 the other end and transport and placing device U3 No. 6 ends, the resistance R9's is another
One end of one end and resistance R7 of end connection resistance R8, one end of the other end connection power supply V3 of the resistance R7 are described
The other end and ground terminal of the other end connection resistance R8 of power supply V3.
A kind of sweep-frequency Békésy audiometer Initiative Defense examination hall special equipment, square wave generation circuit include chip U4, the core
No. 6 ends at No. 3 ends of No. 4 end connection chip U4 of piece U4, the chip U4 pass through No. 7 ends of capacitance C1 connection chips U4,
No. 4 ends of the chip U4 are grounded, and are grounded after No. 9 end connection resistance R11 of the chip U4, the 11 of the chip U4
It is grounded after number end connection resistance R12, is grounded after No. 12 end connection resistance R13 of the chip U4,
The model of chip U4 is 4046.
A kind of sweep-frequency Békésy audiometer Initiative Defense examination hall special equipment, the capacitance of the capacitance three-point type oscillating circuit
One end of C10 receives the signal of audio disturbances signal source, and one end of the resistance R14 of the capacitance three-point type oscillating circuit receives
The signal of varactor diode circuit,
The base stage b of the other end connection triode Q4 of the capacitance C10, one end and the one of capacitance C12 of resistance R15
End,
One end of the other end and diode D1 of the other end connection capacitance C12 of the resistance R14, the diode
One end, one end of capacitance C14, one end of capacitance C15 and the ground terminal of the other end connection resistance R17 of D1,
One end of collector c connection resistance R16 of the triode Q4, one end of capacitance C16, capacitance C13 one end
With one end of inductance L1, the other end of the emitter e connection resistance R17 of the triode Q4, the other end and the electricity of capacitance C13
Hold the other end of C14,
The other end of the other end connection resistance R16 of the resistance R15, the other end of inductance L1 are another with capacitance C15's
The other end of one end, the capacitance C16 connects antenna.
Advantageous effect：
Using a kind of improved capacitance three-point type oscillating circuit, the frequency signal of each frequency range can be interfered.Together
When it combines the functions such as camera, electronic clock, voice broadcast, be greatly saved examination hall choose and arrangement fiber crops
It is tired.Its included accumulator simultaneously, can also work normally in the case where examination hall powers off suddenly, ensure that examination is smoothed out.
Description of the drawings：
Attached drawing 1 is the structural schematic diagram of the utility model.
Attached drawing 2 is the internal circuit flow chart of the utility model.
Attached drawing 3 is that circuit diagram occurs for the staircase waveform of the utility model.
Attached drawing 4 is that circuit diagram occurs for the square wave of the utility model.
Attached drawing 5 is the capacitance three-point type oscillating circuit figure of the utility model.
Hook 1, camera 2, shell 3, electronic clock 4, loudspeaker 5, MP3 control buttons 6, power switch 7, USB interface 8,
Socket port 9, audio play control button 10, detachable hanger 11, protecting crust 12.
Specific implementation mode：
Embodiment 1
A kind of sweep-frequency Békésy audiometer Initiative Defense examination hall special equipment, composition include：Hook 1, camera 2, shell 3, feature
It is：Camera 2 is arranged in the top setting hook 1 of the shell 3, the front surface top centre of the shell 3, and described takes the photograph
As first 2 underface is arranged electronic clock 4, the both sides of the camera 2 are respectively set a loudspeaker 5, when the electronics
The lower right setting MP3 control buttons 6 of clock 4,
Power switch 7 is arranged in the left side of the shell 3, and one group of USB interface is arranged in the bottom end of the power switch 7
8, socket port 9 is arranged in the lower section of the USB interface 8, and the lower section setting audio of the socket port 9 plays control button 10,
Detachable hanger 11 is arranged in the bottom end of the shell 3, and the detachable hanger 11 connects protecting crust 12；
Audio disturbances signal source and ladder wave generation circuit, the ladder wave generation circuit are packed into the shell 3
Staircase waveform is sent to varactor diode circuit, staircase waveform is transmitted to capacitance three-point type and vibrated by the varactor diode circuit
Circuit；
Interference signal source is transmitted to Colpitts oscillation circuit by the audio disturbances signal source.
Embodiment 2
A kind of sweep-frequency Békésy audiometer Initiative Defense examination hall described in embodiment 1 special equipment, the electricity of the ladder wave generation circuit
No. 4 ends, No. 4 ends of transport and placing device U2 of one end connection transport and placing device U3 of source V1 are held with No. 4 of transport and placing device U1,
One end of the other end connection power supply V2 of the power supply V1 and ground terminal, the other end connection of the power supply V2
No. 7 ends of transport and placing device U3, No. 7 ends of transport and placing device U2, No. 7 ends of transport and placing device U1,3 ends of transport and placing device U1, resistance R2 one end with
One end of resistance R3, the other end ground connection of the resistance R2, one end of the other end connection resistance R4 of the resistance R3, electricity
Hinder one end of R1, diode D1 one end and capacitance C2 one end, the one of the other end connection capacitance C9 of the resistance R1
It holds, 2 ends of one end and transport and placing device U1 of diode D6, the other end ground connection of the capacitance C9, the diode D1's is another
One end connects one end of diode D2, one end of the other end connection diode D4 of the diode D2, the diode
The other end of one end and capacitance C2 of the other end connection diode D3 of D4, the other end connection resistance R5 of the diode D3
One end, No. 2 ends of the other end connection transport and placing device U2 of the resistance R5, one end and the one of slide rheostat Q1 of capacitance C3
End, the other end of the other end connection capacitance C3 of the slide rheostat Q1, No. 6 ends and the one of resistance R3 of transport and placing device U2
End, one end of one end and diode D4 of the third end connection resistance R1 of the slide rheostat Q1, the diode D4
One end of other end connection resistance R9, diode D6 the other end and transport and placing device U3 No. 6 ends, the resistance R9's is another
One end of one end and resistance R7 of end connection resistance R8, one end of the other end connection power supply V3 of the resistance R7 are described
The other end and ground terminal of the other end connection resistance R8 of power supply V3.
Embodiment 3
A kind of sweep-frequency Békésy audiometer Initiative Defense examination hall described in embodiment 1 special equipment, square wave generation circuit include chip U4, institute
No. 3 ends of No. 4 end connection chip U4 of the chip U4 stated, No. 6 ends of the chip U4 pass through the 7 of capacitance C1 connection chips U4
Number end, No. 4 of chip U4 end ground connection are grounded after No. 9 end connection resistance R11 of the chip U4, the chip
It is grounded after No. 11 end connection resistance R12 of U4, is grounded after No. 12 end connection resistance R13 of the chip U4,
The model of chip U4 is CD4046.
Square wave generation circuit is audio disturbances signal source.
Embodiment 4
A kind of sweep-frequency Békésy audiometer Initiative Defense examination hall described in embodiment 1 special equipment, the capacitance three-point type oscillating circuit
Capacitance C10 one end receive audio disturbances signal source signal, the one of the resistance R14 of the capacitance three-point type oscillating circuit
End receives the signal of varactor diode circuit,
The base stage b of the other end connection triode Q4 of the capacitance C10, one end and the one of capacitance C12 of resistance R15
End,
One end of the other end and diode D1 of the other end connection capacitance C12 of the resistance R14, the diode
One end, one end of capacitance C14, one end of capacitance C15 and the ground terminal of the other end connection resistance R17 of D1,
One end of collector c connection resistance R16 of the triode Q4, one end of capacitance C16, capacitance C13 one end
With one end of inductance L1, the other end of the emitter e connection resistance R17 of the triode Q4, the other end and the electricity of capacitance C13
Hold the other end of C14,
The other end of the other end connection resistance R16 of the resistance R15, the other end of inductance L1 are another with capacitance C15's
The other end of one end, the capacitance C16 connects antenna.
Household 220V voltages by power unit to charge the battery, give system components power supply, interference signal generate with
Emitting portion generates interference signal by hardware circuit, while image is passed to monitoring room, electronics by camera by being wirelessly transferred
The automatic prover times of GPS built in clock are simultaneously started to work, voice broadcast information built in MP3, and examination terminates preceding 10 minutes proctors
Member starts voice broadcast by external button, reminds examinee.If necessary to play hearing, in advance in data copy to MP3, point
Switch is hit to start to play.
Certainly, the above description is not intended to limit the present invention, and the utility model is also not limited to the example above,
The variations, modifications, additions or substitutions that those skilled in the art are made in the essential scope of the utility model, are also answered
Belong to the scope of protection of the utility model.
Claims (3)
1. a kind of sweep-frequency Békésy audiometer Initiative Defense examination hall special equipment, composition include：Hook（1）, camera（2）, shell（3）,
It is characterized in：The shell（3）Top setting hook（1）, the shell（3）Front surface top among be arranged camera
（2）, the camera（2）Underface be arranged electronic clock（4）, the camera（2）Both sides be respectively set one
Loudspeaker（5）, the electronic clock（4）Lower right be arranged MP3 control buttons（6）,
The shell（3）Left side be arranged power switch（7）, the power switch（7）Bottom end be arranged one group of USB connect
Mouthful（8）, the USB interface（8）Lower section be arranged socket port（9）, the socket port（9）Lower section setting audio play control
Button processed（10）,
The shell（3）Bottom end be arranged detachable hanger（11）, the detachable hanger（11）Connect protecting crust（12）；
The shell（3）Interior loading audio disturbances signal source and ladder wave generation circuit, the ladder wave generation circuit will
Staircase waveform is sent to varactor diode circuit, and staircase waveform is transmitted to capacitance three-point type oscillation electricity by the varactor diode circuit
Road；
Interference signal source is transmitted to Colpitts oscillation circuit by the audio disturbances signal source.
2. a kind of sweep-frequency Békésy audiometer Initiative Defense examination hall according to claim 1 special equipment, it is characterized in that：The staircase waveform
No. 4 ends at No. 4 ends of one end connection transport and placing device U3 of the power supply V1 of circuit, No. 4 ends and transport and placing device U1 of transport and placing device U2 occur,
One end of the other end connection power supply V2 of the power supply V1 and ground terminal, the other end of the power supply V2 connect amplifier
No. 7 of device U3 ends, No. 7 ends of transport and placing device U2, transport and placing device U1 No. 7 ends, 3 ends of transport and placing device U1, one end of resistance R2 and resistance
One end of R3, the other end ground connection of the resistance R2, one end of the other end connection resistance R4 of the resistance R3, resistance R1
One end, diode D1 one end and capacitance C2 one end, one end, two poles of the other end connection capacitance C9 of the resistance R1
The other end at one end of pipe D6 and 2 ends of transport and placing device U1, the capacitance C9 is grounded, the other end connection of the diode D1
One end of diode D2, one end of the other end connection diode D4 of the diode D2, the diode D4's is another
The other end of one end and capacitance C2 of end connection diode D3, one end of the other end connection resistance R5 of the diode D3,
No. 2 ends of the other end connection transport and placing device U2 of the resistance R5, one end and slide rheostat Q1 of capacitance C3 one end, it is described
The other end of other end connection capacitance C3 of slide rheostat Q1, transport and placing device U2 No. 6 ends and resistance R3 one end, it is described
One end of one end and diode D4 of the third end connection resistance R1 of slide rheostat Q1, the other end of the diode D4 connect
One end of connecting resistance R9, the other end of diode D6 and transport and placing device U3 No. 6 ends, the other end of the resistance R9 connects resistance
One end of one end and resistance R7 of R8, one end of the other end connection power supply V3 of the resistance R7, the power supply V3's is another
One end connects the other end and ground terminal of resistance R8.
3. a kind of sweep-frequency Békésy audiometer Initiative Defense examination hall according to claim 1 special equipment, it is characterized in that：The capacitance three
One end of the capacitance C10 of point type oscillating circuit receives the signal of audio disturbances signal source, the capacitance three-point type oscillating circuit
Resistance R14 one end receive varactor diode circuit signal,
The other end of the capacitance C10 connects one end of one end and capacitance C12 of the base stage b of triode Q4, resistance R15,
One end of the other end and diode D1 of the other end connection capacitance C12 of the resistance R14, the diode D1's
The other end connects one end, one end of capacitance C14, one end of capacitance C15 and the ground terminal of resistance R17,
One end of collector c connection resistance R16, one end of capacitance C16, one end of capacitance C13 and the electricity of the triode Q4
Feel one end of L1, the other end of the emitter e connection resistance R17 of the triode Q4, the other end and capacitance of capacitance C13
The other end of C14,
The other end of the other end of the other end connection resistance R16 of the resistance R15, the other end and capacitance C15 of inductance L1,
The other end of the capacitance C16 connects antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820103628.8U CN207926608U (en) | 2018-01-22 | 2018-01-22 | A kind of sweep-frequency Békésy audiometer Initiative Defense examination hall special equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820103628.8U CN207926608U (en) | 2018-01-22 | 2018-01-22 | A kind of sweep-frequency Békésy audiometer Initiative Defense examination hall special equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207926608U true CN207926608U (en) | 2018-09-28 |
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ID=63604855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820103628.8U Expired - Fee Related CN207926608U (en) | 2018-01-22 | 2018-01-22 | A kind of sweep-frequency Békésy audiometer Initiative Defense examination hall special equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207926608U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114063431A (en) * | 2021-11-12 | 2022-02-18 | 湖南艾尔时钟表有限公司 | Multifunctional clock for classroom |
-
2018
- 2018-01-22 CN CN201820103628.8U patent/CN207926608U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114063431A (en) * | 2021-11-12 | 2022-02-18 | 湖南艾尔时钟表有限公司 | Multifunctional clock for classroom |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180928 Termination date: 20200122 |
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| CF01 | Termination of patent right due to non-payment of annual fee |