CN201918041U - Wireless foreign language listening trainer - Google Patents
Wireless foreign language listening trainer Download PDFInfo
- Publication number
- CN201918041U CN201918041U CN201020639311XU CN201020639311U CN201918041U CN 201918041 U CN201918041 U CN 201918041U CN 201020639311X U CN201020639311X U CN 201020639311XU CN 201020639311 U CN201020639311 U CN 201020639311U CN 201918041 U CN201918041 U CN 201918041U
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Abstract
The utility model discloses a wireless foreign language listening trainer which comprises a center machine and a student machine. The trainer is characterized in that the center machine comprises a singlechip, a storage, a wireless signal transmitter and a wireless signal receiving demodulator which are electrically connected with one another; the wireless signal transmitter comprises a frequency stabilized modulator and a transmitting tube; the wireless signal receiving demodulator comprises an electric wave signal demodulator and a frequency stabilized modulator; the student machine comprises a wireless receiving device, a wireless transmitting device, an audio input device, an audio output device and a power supply unit which are electrically connected with one another; the wireless receiving device comprises a wireless signal/electric converter and a demodulation filter, and the demodulation filter is used for outputting the audio signal; and the wireless transmitting device comprises an electric wave signal demodulator and a frequency stabilized modulator. Compared with the prior art, the trainer has the beneficial effects that the transmission efficiency is high; the receiving selectivity is high; the interference between the systems does not occur; and the student machine is convenient to move.
Description
[technical field]
The utility model relates to a kind of language learn device, particularly a kind of wireless device that is applicable to the foreign language listening training.
[background technology]
Listening Training is the key link of foreign language learning, and present foreign language listening training wireless device generally is made up of a main frame and some wireless interspeakers.Its concrete composition mostly is student's desk and is provided with a wireless interspeaker and wireless receiving earphone, sends wireless signal by main frame.But because electronic equipments such as mobile phone is universal, wireless signal is vulnerable to disturb, at this interference, the balanced wireless signal of following measure is taked in the voice classroom that has: front and back, classroom or four jiaos of installation frids, settle the wireless transmit receiver in the frid, described wireless transmit receiver is connected with main frame by wiring, in the hope of the clear covering of wireless signal, but this device has following shortcoming: 1. need connect up installation and maintenance expense height; 2. need to carry out in private classroom, maneuverability is poor; 3. the student can't accomplish free activity with wireless interspeaker, uses inconvenient.
[summary of the invention]
Technical assignment of the present utility model is at above the deficiencies in the prior art, provides a kind of transmission frequency stable, the wireless foreign language listening trainer that receiver selectivity is high.
The technical scheme in the invention for solving the technical problem is: a kind of wireless foreign language listening trainer, comprise center machine and student's machine, it is characterized in that: described center machine comprises single-chip microcomputer, storer, wireless signal transmitter, the wireless signal receiving demodulation device of electrical connection; Described wireless signal transmitter comprises frequency stabilization modulator and power valve; Wireless signal receiving demodulation device comprises electric wave signal detuner and frequency stabilization modulator; Student's machine comprises radio receiver, wireless launcher, voice input device, audio output device and the power supply unit of electrical connection; Described radio receiver comprises wireless signal/electric transducer and demodulator filter, the demodulator filter output audio signal; Described wireless launcher comprises electric wave signal detuner and frequency stabilization modulator.
The wireless signal transmitter of above-mentioned center machine also comprises amplifilter, exports the frequency stabilization modulator to after sound signal input amplifilter cushions amplification filtering.
The radio receiver of above-mentioned student's machine also comprises prime amplifier, its input termination wireless signal/electric transducer, output termination High frequency filter amplifier.
Above-mentioned wireless signal is an infrared signal.
Compared with prior art, the utlity model has following outstanding beneficial effect:
1, transmission frequency is stable, and the receiver selectivity height does not need wiring;
2, by the control radiation power to improve the selectivity of electric wave receiver, promptly can guarantee extensively to promote the utility model and interference between the not generation system;
3, realize the portable mobile of student's machine, overcome the influence that centre frequency drift face brings to reception.
[description of drawings]
Fig. 1 is a structural representation of the present utility model.
[embodiment]
Below in conjunction with specification drawings and specific embodiments the utility model is further specified.
As shown in Figure 1, the utility model comprises center machine and student's machine, and the employing infrared signal is a wireless signal.
Described center machine comprises single-chip microcomputer, storer, wireless signal transmitter, the wireless signal receiving demodulation device of electrical connection.Described wireless signal transmitter comprises amplifilter, frequency stabilization modulator and power valve, the sound signal input amplifilter of storer cushions amplification filtering to amplify and filtering noise, then export the frequency stabilization modulator to and carry out frequency modulation (PFM), produce a modulated frequency signal, excitation infrared transmitting tube irradiating infrared light is finished the infrared signal Launch Operation.Wireless signal receiving demodulation device comprises electric wave signal detuner and frequency stabilization modulator.
Described student's machine comprises radio receiver, wireless launcher, voice input device, audio output device and the power supply unit of electrical connection.Described radio receiver comprises infrared light/electric transducer, prime amplifier and demodulator filter.Infrared light/electric transducer receives space infrared, and convert the electric signal consistent to again via the preposition amplification of prime amplifier, demodulator filter filtering purification modulation with the modulated frequency signal of main frame, restore original acoustical signal and amplify output, export for listening to via audio output device.Described wireless launcher comprises electric wave signal detuner and frequency stabilization modulator.Student's speech converts electric signal input frequency stabilization modulators modulate to through voice input device, encourages the infrared transmitting tube radiation to receive for center machine then.
Need to prove; particular of the present utility model is described in detail the utility model; for a person skilled in the art, in the various conspicuous change of under the situation that does not deviate from spirit and scope of the present utility model it being carried out all within protection domain of the present utility model.
Claims (3)
1. a wireless foreign language listening trainer comprises center machine and student's machine, it is characterized in that: described center machine comprises single-chip microcomputer, storer, wireless signal transmitter, the wireless signal receiving demodulation device of electrical connection; Described wireless signal transmitter comprises frequency stabilization modulator and power valve; Wireless signal receiving demodulation device comprises electric wave signal detuner and frequency stabilization modulator; Student's machine comprises radio receiver, wireless launcher, voice input device, audio output device and the power supply unit of electrical connection; Described radio receiver comprises wireless signal/electric transducer and demodulator filter, the demodulator filter output audio signal; Described wireless launcher comprises electric wave signal detuner and frequency stabilization modulator.
2. wireless foreign language listening trainer according to claim 1 is characterized in that the wireless signal transmitter of described center machine also comprises amplifilter, exports the frequency stabilization modulator to after sound signal input amplifilter cushions amplification filtering.
3. wireless foreign language listening trainer according to claim 1 is characterized in that the radio receiver of described student's machine also comprises prime amplifier, its input termination wireless signal/electric transducer, output termination High frequency filter amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020639311XU CN201918041U (en) | 2010-11-22 | 2010-11-22 | Wireless foreign language listening trainer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020639311XU CN201918041U (en) | 2010-11-22 | 2010-11-22 | Wireless foreign language listening trainer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201918041U true CN201918041U (en) | 2011-08-03 |
Family
ID=44417833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020639311XU Expired - Fee Related CN201918041U (en) | 2010-11-22 | 2010-11-22 | Wireless foreign language listening trainer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201918041U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109326152A (en) * | 2018-11-12 | 2019-02-12 | 长春师范大学 | A kind of interactive Chinese Philology learning device and its application method |
-
2010
- 2010-11-22 CN CN201020639311XU patent/CN201918041U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109326152A (en) * | 2018-11-12 | 2019-02-12 | 长春师范大学 | A kind of interactive Chinese Philology learning device and its application method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110803 Termination date: 20111122 |