CN202586957U - Wireless frequency modulation handheld station - Google Patents
Wireless frequency modulation handheld station Download PDFInfo
- Publication number
- CN202586957U CN202586957U CN2012201659525U CN201220165952U CN202586957U CN 202586957 U CN202586957 U CN 202586957U CN 2012201659525 U CN2012201659525 U CN 2012201659525U CN 201220165952 U CN201220165952 U CN 201220165952U CN 202586957 U CN202586957 U CN 202586957U
- Authority
- CN
- China
- Prior art keywords
- module
- circuit
- processing unit
- central processing
- locked loop
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The utility model relates to the technical field of radio communication, and provides a wireless frequency modulation handheld station which has good transmitting and receiving performance and high call quality, and is provided with multiple functions. The wireless frequency modulation handheld station comprises a power supply and a circuit module, wherein the power supply provides power for an intercom; and the circuit module comprises a voice input module, a base band processing module, a central processor, a synthesizer, a switch converter, a transmitting phase-locked loop circuit, a receiving phase-locked loop circuit, an antenna selector switch, a transmitting circuit, a receiving circuit, a low-pass filter, an antenna, a frequency mixer, an intermediate frequency processing module, an audio frequency power amplifier, a loudspeaker, a button module and a liquid crystal display module.
Description
Technical field
The utility model relates to the telecommunication equipment technical field, particularly a wireless frequency modulation hand-held station.
Background technology
Intercom is simple to operate, therefore is widely used in occasions such as communications and transportation, the dried mouth of railway, petrochemical industry, forestry, estate management, construction site, hotel, is used for contact and command scheduling between the member of community; Link up efficient and improve the quick reaction capability of handling accident to improve; This wherein the speech quality of intercom play a part to be even more important, if speech quality do not guarantee, can not carry out normal talking; In case run into emergency case; Often can not well handle, can not be supported effectively and timely, very inconvenience concerning the staff.
The utility model content
Therefore, to above-mentioned problem, it is functional that the utility model proposes a transmitting-receiving, and speech quality is high and have a wireless frequency modulation hand-held station of diversity function.
For realizing above-mentioned technical problem; The solution that the utility model is taked is: a wireless frequency modulation hand-held station; Comprise power supply and circuit module; Said power supply is that intercom provides power supply; Said circuit module comprises voice input module, baseband processing module, central processing unit, synthesizer, dc-dc converter, emission phase-locked loop circuit, receives phase-locked loop circuit, antenna change-over switch, radiating circuit, receiving circuit, low pass filter, antenna, frequency mixer, IF process module, audio frequency power amplifier, loud speaker, key-press module and LCD MODULE, and wherein voice input module is connected with central processing unit with baseband processing module respectively, and said baseband processing module all is connected with synthesizer with central processing unit; Said synthesizer all is connected with dc-dc converter with central processing unit; Said dc-dc converter is connected with the reception phase-locked loop circuit with the emission phase-locked loop circuit respectively, wherein launches phase-locked loop circuit and is connected with radiating circuit, and radiating circuit all is connected with antenna change-over switch with receiving circuit; Said antenna change-over switch is connected with low pass filter; Said low pass filter is connected with antenna, receives phase-locked loop circuit and is connected with frequency mixer, and said frequency mixer also is connected with the IF process module with receiving circuit respectively; Wherein the IF process module is connected with central processing unit with baseband processing module respectively; Said baseband processing module is connected with audio frequency power amplifier, and said audio frequency power amplifier all is connected with loud speaker with central processing unit, and said central processing unit also is connected with key-press module, LCD MODULE respectively.
Further be: also comprise and be inverted the alarm detection module, said inversion alarm detection module is connected with central processing unit.
Further be: also comprise radio receiver module, said radio receiver module is connected with audio frequency power amplifier with receiving circuit respectively.
Through adopting the aforementioned techniques scheme, the beneficial effect of the utility model is: the wireless frequency modulation hand-held station that designs as stated, processing such as the filtering of the process baseband processing module that transmits, preemphasis, scramble, compression; After also through the buffering of radiating circuit amplify, excitation is amplified, power amplification; Low pass filter suppresses harmonic components, and signal is launched again, and signal amplifies and filtering through the radio frequency of receiving circuit in the time of reception; Effective filtering has also been carried out for the clutter of signal in the back in the IF process module; Audio signal delivers to that baseband processing module carries out descrambled, expands, postemphasises again, send into loud speaker through audio frequency power amplifier after the filtering, therefore, receives and dispatches functional; Guaranteed speech quality, speech quality is high.
Description of drawings
Fig. 1 is the total system theory diagram of the utility model embodiment.
Embodiment
Combine accompanying drawing and specific embodiment that the utility model is further specified at present.
With reference to figure 1; What the utility model embodiment disclosed is; A wireless frequency modulation hand-held station; Comprise power supply and circuit module; Said power supply is that intercom provides power supply, and said circuit module comprises voice input module 1, baseband processing module 2, central processing unit 3, synthesizer 4, dc-dc converter 5, emission phase-locked loop circuit 6, receives phase-locked loop circuit 7, antenna change-over switch 8, radiating circuit 9, receiving circuit 10, low pass filter 11, antenna 12, frequency mixer 13, IF process module 14, audio frequency power amplifier 15, loud speaker 16, key-press module 17, LCD MODULE 18, inversion alarm detection module 19 and radio receiver module 20, and wherein voice input module 1 is connected with central processing unit 3 with baseband processing module 2 respectively; Said baseband processing module 2 all is connected with synthesizer 4 with central processing unit 3; Said synthesizer 4 all is connected with dc-dc converter 5 with central processing unit 3, and said dc-dc converter 5 is connected with reception phase-locked loop circuit 7 with emission phase-locked loop circuit 6 respectively, wherein launches phase-locked loop circuit 6 and is connected with radiating circuit 9; Radiating circuit 9 all is connected with antenna change-over switch 8 with receiving circuit 10; Said antenna change-over switch 8 is connected with low pass filter 11, and said low pass filter 11 is connected with antenna 12, receives phase-locked loop circuit 7 and is connected with frequency mixer 13; Said frequency mixer 13 also is connected with IF process module 14 with receiving circuit 10 respectively; Wherein IF process module 14 is connected with central processing unit 3 with baseband processing module 2 respectively, and said baseband processing module 2 is connected with audio frequency power amplifier 15, and said audio frequency power amplifier 15 all is connected with loud speaker 16 with central processing unit 3; Said central processing unit 3 also is connected with key-press module 17, LCD MODULE 18 and inversion alarm detection module 19 respectively, and said radio receiver module 20 is connected with audio frequency power amplifier 15 with receiving circuit 10 respectively.
Said wireless frequency modulation hand-held station is provided with and control operation it through key-press module 17, and can indicated channel or frequency through LCD MODULE 18, and the groundwork of wireless frequency modulation hand-held station is for transmitting and receiving.
In the time of emission; Voice messaging is by voice input module 1 input; And 1 pair of voice messaging of voice input module carries out the Gain Automatic control and treatment of AGC, and the audio-frequency information after the processing is sent in the baseband processing module 2, and 2 pairs of audio-frequency informations of baseband processing module carry out processing such as filtering, preemphasis, scramble, compression and carry out limit filtration then; Be sent to the audio-frequency information after handling in the synthesizer 4 then; Central processing unit 3 produces CTCSS, DTCSS, DTMF, 2TONE signalling coding simultaneously, and is sent to synthesizer 4 to these signalling codings, and central processing unit 3 control switch transducers 5 are switched to emission phase-locked loop circuit 6; Synthesizer 4 passes signalling coding that 2 audio-frequency informations sent here and central processing unit 3 transmit to baseband processing module to be mixed and sends into emission phase-locked loop circuit 6 and carry out frequency modulation(FM) and produce the radio-frequency carrier signal of launching; Radio-frequency carrier signal again through the buffering of radiating circuit 9 amplify, excitation is amplified, power amplification, produces specified radio-frequency power, after through antenna change-over switch 8 and low pass filter 11; Suppress harmonic components, and then launch via antenna 12.Further; When 19 work of described inversion alarm detection module are opened, when detecting inversion state, face a danger when falling down to the ground like the user; Be inverted alarm detection module 19 in the information input central processing unit 3; Central processing unit 3 detects unusually, directly information Control is launched, and reports warning message.
When receiving; The signal that antenna 12 receives is through low pass filter 11 and antenna change-over switch 8; Carry out radio frequency amplification and filtering entering frequency mixer 13 by 10 pairs of signals of receiving circuit; Central processing unit 3 control switch transducers 5 are connected to and receive phase-locked loop circuit 7 simultaneously; Receive phase-locked loop circuit 7 and produce first local oscillation signals and also be sent to frequency mixer 13, frequency mixer 13 will from the signal of receiving circuit 10 with from the first local oscillation signal mixing that receives phase-locked loop 7 and generate first intermediate-freuqncy signal, and first intermediate-freuqncy signal is sent in the IF process module 14; 14 pairs first intermediate-freuqncy signals of said IF process module are further eliminated the noise signal of neighboring trace; And second local oscillation signal that produces in first local oscillation signal and the IF process module 14 mixing once more generates second intermediate-freuqncy signal, and second intermediate-freuqncy signal is exaggerated and frequency discrimination via the useless spurious signal of IF process module 14 filterings; Produce audio signal and signalling coding signal; Most of audio signal is directly delivered to baseband processing module 2, carries out descrambled, expands, postemphasises, delivers to audio frequency power amplifier 15 after the filtering through baseband processing module 2, after audio frequency power amplifier 15 is handled, delivers to loud speaker 16; Analog port and the predefined magnitude of voltage of delivering to central processing unit 3 after wherein some audio signal is handled through the noise detection rectification of IF process module 14 compare; According to the open perhaps output of mute speaker 16 of comparative result control, the signalling coding signal is delivered to central processing unit 3 decoding identifications simultaneously, and central processing unit 3 carries out the control corresponding operation according to signal.Further; Pass through the processing of receiving circuit 10 from the radio receiver signal of antenna 12 receptions; Directly send into radio receiver module 20 and handle, 20 pairs of amplitude modulation of radio receiver module and FM signal receive handles the back output audio signal, and audio signal is sent into loud speaker 16 through audio frequency power amplifier 15 processing and amplifying.
The wireless frequency modulation hand-held station of design in sum receive and dispatch functionally, and speech quality is high, has inversion detection alarm and wireless function.
The above record is merely the embodiment that utilizes this origination techniques content, anyly is familiar with modification, the variation that this creation of this art utilization is done, and all belongs to the claim of this creation opinion, and is not limited to embodiment announcement person.
Claims (3)
1. a wireless frequency modulation hand-held station; Comprise power supply and circuit module; Said power supply is that intercom provides power supply; It is characterized in that: said circuit module comprises voice input module, baseband processing module, central processing unit, synthesizer, dc-dc converter, emission phase-locked loop circuit, receives phase-locked loop circuit, antenna change-over switch, radiating circuit, receiving circuit, low pass filter, antenna, frequency mixer, IF process module, audio frequency power amplifier, loud speaker, key-press module and LCD MODULE, and wherein voice input module is connected with central processing unit with baseband processing module respectively, and said baseband processing module all is connected with synthesizer with central processing unit; Said synthesizer all is connected with dc-dc converter with central processing unit; Said dc-dc converter is connected with the reception phase-locked loop circuit with the emission phase-locked loop circuit respectively, wherein launches phase-locked loop circuit and is connected with radiating circuit, and radiating circuit all is connected with antenna change-over switch with receiving circuit; Said antenna change-over switch is connected with low pass filter; Said low pass filter is connected with antenna, receives phase-locked loop circuit and is connected with frequency mixer, and said frequency mixer also is connected with the IF process module with receiving circuit respectively; Wherein the IF process module is connected with central processing unit with baseband processing module respectively; Said baseband processing module is connected with audio frequency power amplifier, and said audio frequency power amplifier all is connected with loud speaker with central processing unit, and said central processing unit also is connected with key-press module, LCD MODULE respectively.
2. wireless frequency modulation hand-held station according to claim 1 is characterized in that: also comprise and be inverted the alarm detection module, said inversion alarm detection module is connected with central processing unit.
3. wireless frequency modulation hand-held station according to claim 1 is characterized in that: also comprise radio receiver module, said radio receiver module is connected with audio frequency power amplifier with receiving circuit respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201659525U CN202586957U (en) | 2012-04-18 | 2012-04-18 | Wireless frequency modulation handheld station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201659525U CN202586957U (en) | 2012-04-18 | 2012-04-18 | Wireless frequency modulation handheld station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202586957U true CN202586957U (en) | 2012-12-05 |
Family
ID=47256313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201659525U Expired - Fee Related CN202586957U (en) | 2012-04-18 | 2012-04-18 | Wireless frequency modulation handheld station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202586957U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106301445A (en) * | 2016-08-08 | 2017-01-04 | 泉州市琪祥电子科技有限公司 | A kind of novel aviation UHF band reception circuit |
| CN108199798A (en) * | 2017-12-11 | 2018-06-22 | 科大讯飞股份有限公司 | A kind of power supply circuit of radio antenna |
| CN108494423A (en) * | 2018-03-09 | 2018-09-04 | 西安蜂语信息科技有限公司 | Source codec method and device |
| CN115411828A (en) * | 2022-11-02 | 2022-11-29 | 深圳多为智联科技有限公司 | Interphone battery protection circuit and interphone |
-
2012
- 2012-04-18 CN CN2012201659525U patent/CN202586957U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106301445A (en) * | 2016-08-08 | 2017-01-04 | 泉州市琪祥电子科技有限公司 | A kind of novel aviation UHF band reception circuit |
| CN106301445B (en) * | 2016-08-08 | 2019-01-04 | 泉州市琪祥电子科技有限公司 | A kind of aviation UHF band reception circuit |
| CN108199798A (en) * | 2017-12-11 | 2018-06-22 | 科大讯飞股份有限公司 | A kind of power supply circuit of radio antenna |
| CN108494423A (en) * | 2018-03-09 | 2018-09-04 | 西安蜂语信息科技有限公司 | Source codec method and device |
| CN115411828A (en) * | 2022-11-02 | 2022-11-29 | 深圳多为智联科技有限公司 | Interphone battery protection circuit and interphone |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6415158B1 (en) | Dual mode mobile phone operating as a two-way radio | |
| US6216017B1 (en) | Separable cellular telephone and method for operating the same | |
| RU2526376C2 (en) | Remote control of mobile radio communication system through portable radio communication system | |
| CN102801438B (en) | Handheld type wireless maritime affair interphone | |
| CN202586957U (en) | Wireless frequency modulation handheld station | |
| CN204721352U (en) | A kind of intercom realizing long-distance talkback | |
| CN105635856B (en) | Unmanned aerial vehicle maritime affairs voice communication system | |
| CN108183743A (en) | The Beidou communication system for being used for transmission voice, picture based on soft compressed encoding | |
| CN102421036A (en) | Digital interphone | |
| CN102821204B (en) | Portable multimedia communication device and application of portable multimedia communication device | |
| CN201813364U (en) | Ship platform deck frequency modulation interphone circuit | |
| CN108226957A (en) | Portable multi-card terminal based on Beidou satellite system | |
| CN201114029Y (en) | Bluetooth earphone possessing wireless broadcasting receiving function | |
| CN201336735Y (en) | Mobile phone with talkback function | |
| CN201708892U (en) | Wireless hand microphone device | |
| CN101610306B (en) | Radio communication device | |
| CN102055490B (en) | Frequency modulation (FM) broadcasting method, device and terminal | |
| CN201123090Y (en) | Mobile phone monitoring system | |
| CN201708793U (en) | Vehicular wireless frequency modulation interphone circuit | |
| CN201222727Y (en) | Public frequency band intercommunication equipment with function of transmitting and receiving short message | |
| CN107786688B (en) | Mobile terminal with interphone function | |
| CN202586958U (en) | Frequency modulation handheld station provided with automatic power control | |
| CN202586953U (en) | Frequency modulation handheld station provided with identity recognition | |
| CN202374403U (en) | Short-wave channel digital interphone | |
| KR100695248B1 (en) | Method for listening radio broadcast by using bluetooth wireless headset in mobile communication terminal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20150418 |
|
| EXPY | Termination of patent right or utility model |