CN2501258Y - Radio frequency monitor with talkback function - Google Patents
Radio frequency monitor with talkback function Download PDFInfo
- Publication number
- CN2501258Y CN2501258Y CN01255840U CN01255840U CN2501258Y CN 2501258 Y CN2501258 Y CN 2501258Y CN 01255840 U CN01255840 U CN 01255840U CN 01255840 U CN01255840 U CN 01255840U CN 2501258 Y CN2501258 Y CN 2501258Y
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- frequency
- radio
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Abstract
The utility model discloses a wireless radio frequency monitoring device with talk back function, which includes an audio and video transmitting circuit and an audio and video receiving circuit. The device is characterized in that: an audio and video transmitting circuit bed is added with a sound wireless receiving circuit, and an audio and video receiving circuit bed is added with a wireless sound transmitting circuit. Therefore the utility model has a talk back function besides the monitoring function. If used to nurses the patient or the elder, the utility model can answer a plurality of questions asked by the patient or the elder, and besides can monitor the status of the patient or the elder.
Description
Technical field: the utility model relates to a kind of less radio-frequency supervising device.
Background technology: at present, device with less radio-frequency monitoring function, form by audio-visual radiating circuit and receiving circuit, all only supervise and monitor function, there is no intercommunication function, therefore supervising and monitor the people can't directly be linked up with supervising and monitor the people, or is in time sent indication to supervising and monitor the people, so its function has further improved needs.
Summary of the invention:
The purpose of this utility model provides a kind of less radio-frequency supervising device that intercommunication function is arranged.
The utility model is to realize like this, a kind of less radio-frequency supervising device that has intercommunication function, comprise audio-visual radiating circuit and audio-visual receiving circuit, it is characterized in that: set up a sound wireless receiving circuit on the audio-visual radiating circuit support, set up a sound radio transmitter on the audio-visual receiving circuit support, wherein newly-increased sound radio transmitter is so to constitute: obtain audio signal by microphone circuit, earlier through the 4th audio frequency amplifier, after the amplification, one the tunnel sends into the input of signal equalization control circuit, output taking-up control signal from the signal equalization control circuit feeds back to the 4th audio frequency amplifier input again, making audio signal strength is a fixed range position standard, frequency modulation modulation/oscillating circuit is sent on another road, takes out radiofrequency signal by its output, again through the 4th radio frequency amplifier, after the amplification, after radiofrequency signal inserted four-tape bandpass filter, output signal was directly sent into radio-frequency antenna, launches; Wherein newly-increased sound wireless receiving circuit is so to constitute: by the radiofrequency signal of radio-frequency antenna reception, earlier behind match circuit, send into first radio frequency amplifier again, after the amplification, radiofrequency signal inserts first frequency modulation/demodulator circuit, takes out the audio frequency recovering signal from its output then, import second audio frequency amplifier again, after the amplification, output audio signal is sent into loudspeaker again, sounds.
Advantage of the present utility model is described below: owing to set up a sound wireless receiving circuit on audio-visual radiating circuit support, set up a wireless voice radiating circuit on the audio-visual receiving circuit support, so the utility model except possessing the function of supervising, also possesses intercommunication function.Nurse or during the old man, except can monitoring, monitor patient or old man's situation, can also answer patient or old man's ask for something problem if be used in.So can allow and be experienced more warmths and care by the ward.If when being used in the nurse child,, can also allow child hear ward's sound except monitoring the baby act.So can allow child experience the bigger sense of security.
Description of drawings:
Fig. 1 is the utility model transmitter block circuit block diagram;
Fig. 2 is the utility model receiver block circuit block diagram;
Fig. 3 is sound less radio-frequency receiving circuit figure;
Fig. 4 is sound less radio-frequency radiating circuit figure.
Embodiment: please refer to Fig. 1, Fig. 2, the less radio-frequency supervising device that has intercommunication function described in the utility model mainly is to be made of transmitter block circuit diagram 1 and receiver block circuit diagram 2.This transmitter block circuit diagram 1 comprises audio-visual radiating circuit, and this audio-visual radiating circuit is so to constitute: by CCD or CMOS shooting module 1, obtain picture signal after, input video shaping circuit 2; In addition by microphone circuit 3, obtain voice signal after, earlier through first audio frequency amplifier 4, after the amplification, insert frequency interleaved modulation modulator 5, then by its output, obtain modulating wave, send into bandwidth amplifier 6 together with the vision signal of finishing back again, after the amplification, signal inserts the vibration/mixer amplifier 7 that it is carried out the frequency modulation modulation again, and afterwards, order is sent into buffer amplifier 8 again, after the amplification, signal behind the elimination harmonic wave, is sent into transmitting antenna 10 again through first band pass filter 9.As Fig. 1, Fig. 3, other increases by a sound less radio-frequency receiving circuit, and it is so to constitute: at first the radio frequency reception antenna 11, the radiofrequency signal that receives is earlier through match circuit 12, afterwards, send into first radio frequency amplifier 13, after the amplification, insert first frequency modulation demodulation circuit 14, audio frequency is reduced with vibration/mixing/demodulation function, import second audio frequency amplifier 15 again, after the amplification, audio signal outputs to loudspeaker 16 again, sounds.
This receiver block circuit diagram 2, comprise audio-visual receiving circuit, this audio-visual receiving circuit is so to constitute: by reception antenna 17, receive the radio frequency video-audio signal that transmitter block is sent, earlier through second band pass filter 18, behind the elimination clutter, import second radio frequency amplifier 19 again, after the amplification, insert radio frequency attenuator 20 inputs again, by its output, take out the radiofrequency signal of fixed range position standard again, send into the 3rd radio frequency amplifier 21, after the amplification, signal is input to the 3rd band pass filter 22 inputs again, sends into frequency mixer 24 with the oscillator signal that is produced by phase-locked loop 23 again, obtains intermediate-freuqncy signal by frequency mixer 24 output outputs, send into first intermediate frequency amplifier 25, after the amplification, signal is imported intermediate-frequency filter 26 again, by the intermediate-freuqncy signal of intermediate-frequency filter 26 outputs, again through second intermediate frequency amplifier 27, after the amplification, signal is sent into second FM demodulator 28 again, is obtained the image and the voice signal of demodulation reduction by its output.Wherein picture signal is earlier through first video amplifier 29, and after the amplification, order inserts video filter 30, the signal after the filtering, and again through second video amplifier 31, after the amplification, signal is obtained picture signal via video processing circuits 32, sends into imagescope 33 again.And voice signal at first passes through sound intermediate frequency filtering 34, and signal inserts sound IF amplifier 35 again after the filtering, after the amplification, signal is sent into the 3rd FM demodulator 36 again, obtains audio signal by its output, again through the 3rd audio frequency amplifier 37, after the amplification, signal is sent into loudspeaker again, sends sound equipment.
In addition, another output taking-up feedback signal by second FM demodulator 28 is connected to radio frequency attenuator 20, is a fixed range position standard in order to automatic control radio-frequency (RF) signal strength.As Fig. 2, Fig. 4, other increases by a sound less radio-frequency radiating circuit, by microphone circuit 39, obtain an audio signal, earlier with the 4th audio frequency amplifier 40, after the amplification, one the tunnel sends into frequency modulation modulation/oscillating circuit 42, take out radiofrequency signal by its output again, order is imported the 4th radio frequency amplifier 43, after the amplification, signal inserts four-tape bandpass filter 44 again, take out signal by its output again, send into radio-frequency antenna 45, launch.And another output of the 4th audio frequency amplifier 40 is connected to the input of signal equalization control circuit 41, output taking-up control signal from signal equalization control circuit 41 feeds back to the 4th audio frequency amplifier input again, and making audio signal strength is a fixed range position standard.
Claims (1)
- A kind of less radio-frequency supervising device that has intercommunication function, comprise audio-visual radiating circuit and audio-visual receiving circuit, it is characterized in that: set up a sound wireless receiving circuit on the audio-visual radiating circuit support, set up a sound radio transmitter on the audio-visual receiving circuit support, wherein newly-increased sound radio transmitter is so to constitute: obtain audio signal by microphone circuit, earlier through the 4th audio frequency amplifier, after the amplification, one the tunnel sends into the input of signal equalization control circuit, output taking-up control signal from the signal equalization control circuit feeds back to the 4th audio frequency amplifier input again, making audio signal strength is a fixed range position standard, frequency modulation modulation/oscillating circuit is sent on another road, take out radiofrequency signal by its output, again through the 4th radio frequency amplifier, after the amplification, after radiofrequency signal inserts four-tape bandpass filter, output signal is directly sent into radio-frequency antenna, launches; Wherein, newly-increased sound wireless receiving circuit is so to constitute: by the radiofrequency signal of radio-frequency antenna reception, behind match circuit, send into first radio frequency amplifier again, after the amplification earlier, radiofrequency signal inserts first frequency modulation/demodulator circuit, take out the audio frequency recovering signal from its output then, import second audio frequency amplifier again, after the amplification, output audio signal is sent into loudspeaker again, sounds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01255840U CN2501258Y (en) | 2001-09-19 | 2001-09-19 | Radio frequency monitor with talkback function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01255840U CN2501258Y (en) | 2001-09-19 | 2001-09-19 | Radio frequency monitor with talkback function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2501258Y true CN2501258Y (en) | 2002-07-17 |
Family
ID=33664899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN01255840U Expired - Fee Related CN2501258Y (en) | 2001-09-19 | 2001-09-19 | Radio frequency monitor with talkback function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2501258Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100459419C (en) * | 2002-12-30 | 2009-02-04 | 诺基亚公司 | Linearization of amplified back distortion |
| CN101969420A (en) * | 2003-02-18 | 2011-02-09 | 高通股份有限公司 | Communication receiver with an adaptive equalizer |
| CN102665069A (en) * | 2012-04-18 | 2012-09-12 | 李建刚 | Multidirectional wireless and closed-circuit dual-purpose monitor |
-
2001
- 2001-09-19 CN CN01255840U patent/CN2501258Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100459419C (en) * | 2002-12-30 | 2009-02-04 | 诺基亚公司 | Linearization of amplified back distortion |
| CN101969420A (en) * | 2003-02-18 | 2011-02-09 | 高通股份有限公司 | Communication receiver with an adaptive equalizer |
| CN101969420B (en) * | 2003-02-18 | 2013-05-29 | 高通股份有限公司 | Communication receiver with an adaptive equalizer |
| CN102665069A (en) * | 2012-04-18 | 2012-09-12 | 李建刚 | Multidirectional wireless and closed-circuit dual-purpose monitor |
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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: 20020717 Termination date: 20100919 |