CN2194569Y - Wireless two-direction diagram and words data transmission device - Google Patents

Wireless two-direction diagram and words data transmission device Download PDF

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Publication number
CN2194569Y
CN2194569Y CN 94226425 CN94226425U CN2194569Y CN 2194569 Y CN2194569 Y CN 2194569Y CN 94226425 CN94226425 CN 94226425 CN 94226425 U CN94226425 U CN 94226425U CN 2194569 Y CN2194569 Y CN 2194569Y
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CN
China
Prior art keywords
frequency amplifier
wireless
signal
signals
audio
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Expired - Fee Related
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CN 94226425
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Chinese (zh)
Inventor
陈安南
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Individual
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Individual
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Priority to CN 94226425 priority Critical patent/CN2194569Y/en
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Publication of CN2194569Y publication Critical patent/CN2194569Y/en
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Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a wireless two-direction diagram and words data transmission device, which is formed by connecting a wireless radio frequency transceiver on input and output ends of a Chinese processing device which can transform digital signals into audio signals. Under the control of software, diagram and words data signals are transformed into the audio signals by the Chinese processing device and are modulated into high frequency signals after magnification, and the diagram and words data signals are sent by antennae after high frequency amplification. High frequency signals are output to the Chinese processing device after detection and magnification, and are changed into digital signals for reading. The utility model overcomes the defects of limited one-way transmission of wireless transmission, high cost of cable transmission and low utilization ratio of communication resource, and has the advantages of no attendance and wait.

Description

Wireless two-direction diagram and words data transmission device
The utility model relates to a kind of telecommunication transmission equipment, particularly a kind of wireless two-way image, text and data conveyer.
In the prior art, the image, text and data transfer system has facsimile machine, computer telegraph and the teletext that uses wireless transmission, the Chinese pager etc. that use wired transmission, wired transmission costs an arm and a leg, communication resources utilization ratio is low, and one-way transmission is only limit in wireless transmission, can not satisfy user's demand.
The purpose of this utility model is in order to overcome deficiency of the prior art, and provides a kind of cost low, improves the information transfer capability, need not be on duty, wait for that transmission information is accurate, glitch-free wireless two-way image, text and data conveyer.
Wireless two-way image, text and data conveyer of the present utility model comprises the Chinese language processing equipment that digital signal conversion can be become audio signal, it is characterized in that the input of Chinese language processing equipment, output are connected with frequency modulation or amplitude modulation rf receiver and transmitter.Radiating portion in the rf receiver and transmitter has audio frequency amplifier, conversion modulator, high-frequency amplifier; Receiving unit has demodulator, audio frequency amplifier.Under software program control, facsimile data signal becomes audio signal through the Chinese language processing device transform, after being amplified by audio frequency amplifier, is modulated to high-frequency signal through conversion modulator, after high-frequency amplifier amplifies, is launched by antenna again; Form audio signal from the high-frequency signal of antenna input through the demodulator detection, export the Chinese language processing device transform to after amplifying by audio frequency amplifier and become digital signal for reading.
Fig. 1 is the utility model structure chart;
Fig. 2 is a radio-frequency (RF) transceiver electricity theory diagram;
Fig. 3 is the radio-frequency (RF) transceiver circuit diagram;
Fig. 4 is the radio-frequency (RF) transceiver printed circuit board (PCB);
Fig. 5 is a radio-frequency (RF) transceiver printed circuit board component layout plan.
Now illustrated embodiment is made detailed description to the utility model in conjunction with the accompanying drawings.
Chinese language processing equipment choosing china educational computer.Rf receiver and transmitter comprises audio frequency amplifier I, conversion modulator II, high-frequency amplifier III, the demodulator IV of receiving unit, the audio frequency amplifier V of radiating portion.In the audio frequency amplifier I, transistor BG 1Base stage also meets capacitor C 2Anodal, resistance R 1, R 2An end; BG 1Emitter, collector electrode connect resistance R respectively 3One end, resistance R 4, capacitor C 3One end; R 1, R 4The other end, capacitor C 1One end also meets power supply+6V, C 1, R 2, R 3, C 3The other end and ground connection, C 2Negative pole is a signal input part, connectionist learning machine signal output part.In the conversion modulator II, transistor BG 2Base stage connects BG 1Collector electrode, BG 2Emitter and connecting resistance R 5, capacitor C 5, C 6One end; BG 2Collector electrode also meets capacitor C 4, inductance coil L 1One end, C 6The other end; R 5, C 6The other end and ground connection.C 4, L 1The other end also meets power supply+6V.In the high-frequency amplifier III, transistor BG 3Base stage connects capacitor C 7, resistance R 6One end; C 7The other end connects L 1Centre cap, BG 3Emitter, R 6The other end and ground connection, BG 3Collector electrode connects capacitor C 8, inductance coil L 2One end; C 8, L 2The other end also meets power supply+6V, capacitor C 9Two ends connect L respectively 2Centre cap, antenna.In the demodulator IV, transistor BG 4Collector electrode connects capacitor C 10, trimmer capacitor C 11, inductance coil L 3One end; C 10The other end connects antenna.C 11, L 3The other end and resistance R 7One end also meets power supply+6V, BG 4Base stage connects R 7The other end, capacitor C 13Positive pole, C 13Minus earth, BG 4Emitter connects inductance coil L 4One end, L 4The other end connects resistance R 8, capacitor C 12One end, capacitor C 14Positive pole, R 8, C 12Other end ground connection.In the audio frequency amplifier V, transistor BG 5Base stage connects C 14Negative pole, resistance R 9One end, BG 5Grounded emitter, BG 5Collector electrode connects resistance R 1, an end, capacitor C 1, positive pole, R 9, R 10The other end connects power supply+6V, C 15Negative pole is a signal output part, connectionist learning machine signal input part.
Each electronic component is fixedly mounted in the mounting box after pressing Fig. 4, welding shown in Figure 5, is electrically connected with learning machine.
The utility model is owing to adopt above design, overcome wireless transmission in the prior art and only limit one-way transmission, wired transmission costs an arm and a leg, communication resources utilization ratio is low weak point, and cost is low, has improved the information transfer capability.Under software program control, can constitute the transmission network by many, need not be on duty, wait for, transmission information accurately, in order, reliable operation, noiseless.

Claims (1)

1, a kind of wireless two-way image, text and data conveyer, comprise the Chinese language processing equipment that digital signal conversion can be become audio signal, it is characterized in that the input of Chinese language processing equipment, output is connected with rf receiver and transmitter, radiating portion in the rf receiver and transmitter has audio frequency amplifier (I), conversion modulator (II), high-frequency amplifier (III), receiving unit has demodulator (IV), audio frequency amplifier (V), under software program control, facsimile data signal becomes audio signal through the Chinese language processing device transform, after audio frequency amplifier (I) amplification, be modulated to high-frequency signal through conversion modulator (II), after high-frequency amplifier (III) amplifies, launch again by antenna; Form audio signal from the high-frequency signal of antenna input through demodulator (IV) detection, export the Chinese language processing device transform to after amplifying by audio frequency amplifier (V) and become digital signal for reading.
CN 94226425 1994-03-20 1994-03-20 Wireless two-direction diagram and words data transmission device Expired - Fee Related CN2194569Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 94226425 CN2194569Y (en) 1994-03-20 1994-03-20 Wireless two-direction diagram and words data transmission device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 94226425 CN2194569Y (en) 1994-03-20 1994-03-20 Wireless two-direction diagram and words data transmission device

Publications (1)

Publication Number Publication Date
CN2194569Y true CN2194569Y (en) 1995-04-12

Family

ID=33839395

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 94226425 Expired - Fee Related CN2194569Y (en) 1994-03-20 1994-03-20 Wireless two-direction diagram and words data transmission device

Country Status (1)

Country Link
CN (1) CN2194569Y (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1295867C (en) * 2003-08-12 2007-01-17 余小宁 High fidelity audio signal amplifying method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1295867C (en) * 2003-08-12 2007-01-17 余小宁 High fidelity audio signal amplifying method

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GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee