CN201171228Y - Vehicle-mounted close range public broadcast interphone - Google Patents
Vehicle-mounted close range public broadcast interphone Download PDFInfo
- Publication number
- CN201171228Y CN201171228Y CNU200720126678XU CN200720126678U CN201171228Y CN 201171228 Y CN201171228 Y CN 201171228Y CN U200720126678X U CNU200720126678X U CN U200720126678XU CN 200720126678 U CN200720126678 U CN 200720126678U CN 201171228 Y CN201171228 Y CN 201171228Y
- Authority
- CN
- China
- Prior art keywords
- vehicle
- interphone
- intercom
- close range
- mounted close
- 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
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- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Abstract
The utility model relates to a vehicle interphone capable of smoothing sound communication between strange vehicles running in short distance, which totally transmits (and receives) radio signals with same frequency. The maximum radiated power is less than 0.5 watt. The vehicle interphone is used for the sound communication between the vehicles running in short distance, is provided with a radiated power adjusting knob, and can adjust the radiated range of sound signals. The vehicle interphone can be used for asking for directions and help to the neighboring vehicles under the condition of no influence on the driving safety.
Description
Affiliated technical field:
The utility model relates to a kind of wireless interspeaker that uses on the automobile that is fit to be installed on, and especially uses same radio frequency within Chinese territory, and effectively transmitting range has only the vehicle-mounted intercom of small-power of hundreds of rice.It has listens to and broadcasts two functions.
Background technology:
Present vehicle-mounted intercom manufacturing technology is very ripe, but the usefulness of using proprietary frequency to communicate with each other between the interpersonal or order group who just is used to specify.And power is bigger, and communication distance is far away.On the road of vehicle ', find adjacent vehicle travel unusually (supposing discovery the place ahead driving vehicle leakage of oil) at foreign environment.Even two cars only far also can not be informed adjacent vehicle abnormal condition situation at a distance of tens meters.
Summary of the invention:
In order to solve the problem that to link up between strange vehicle in travelling.The utility model provides a kind of vehicle-mounted public broadcasting intercom, and it can make the vehicle that travels at the same area, easily carries out voice each other and links up (inform abnormal conditions mutually, ask the way, yell for help etc.).
The technical scheme that its technical problem that solves the utility model adopts is: in all vehicle-mounted public broadcasting intercom inside, all use same model frequency control circuit.Guarantee the tranmitting frequency and the receive frequency identical (the free public frequency range of Chinese rules) of all vehicle-mounted public broadcasting intercoms.Simultaneously this vehicle-mounted public broadcasting intercom by antenna, feeder line, loud speaker, speaker volume adjusting knob, listen to key button (containing mains switch), broadcasting key button (same emission key), transmission power adjustment button, receiver, earphone jack, power line etc. and form.When the transmission power adjustment button was threaded to maximum to the right, the transmitting power of this public broadcasting intercom was 0.5W.
The beneficial effects of the utility model are: closely public broadcasting intercom of vehicle has been installed, can have been carried out voice between vehicle and adjacent vehicle easily and link up.
Description of drawings:
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a pictorial diagram of the present utility model.
Fig. 2 is circuit theory diagrams of the present utility model
(1) antenna (2) feeder line (3) speaker volume adjusting knob (4) loud speaker (5) transmission power adjustment button (6) earphone jack (7) is listened to key (8) receiver (9) broadcast transmission key (10) power line among the figure
Embodiment:
Vehicle-mounted intercom antenna (1) represented in the accompanying drawing is installed on outside the car, is connected on the interior main frame of car by feeder line (2).Power line (10) is connected on the interior cigarette lighter socket of car.Press during use and listen to button (7), loud speaker (4) promptly can play back the sound message of receiving.Regulate speaker volume adjusting knob (3) and select to be fit to the volume of oneself.When needs send sound message towards periphery, press the duplex push-button switch that broadcast transmission key (9) has auto-lock function and promptly connect radiating circuit in the machine, receiver
(8) promptly the voice in the car can be launched by antenna.Regulate the transmitting range that transmission power adjustment button (5) can be selected voice this moment, but adjusting knob (5) is when being threaded to maximum, and the transmitting power of intercom equals 0.5 watt.Sound message is pressed broadcast transmission key (9) push-button switch self-locking releasing after sending and finishing once more, and radiating circuit disconnects in the machine, and speaker circuit is connected, and recovers to receive outside signal state.
Below in conjunction with accompanying drawing 2 operation principle of the present utility model is described:
Pressing and listening to key button (7) switch is energized.The high-frequency signal that car outside antenna (1) receives 400MHZ is coupled to FM reception application-specific integrated circuit (ASIC) TA8164P by C27, through too highly put, local oscillator, mixing, in put with frequency discrimination after, 11 pin output audio signals from IC2, be coupled to IC1 by C12, audio signal after power amplification is adjusted to suitable volume through adjustable resistance (3) and is promoted sound horn by C10 coupling output.When externally launching voice, press broadcast transmission key (9) switch and cut off the sound horn circuit, connect C9 to R11 radiating circuit simultaneously.Voice are at first detected by receiver 8, after triode V1 amplifies, output to after IC1 carries out power amplification by C4 coupling, deliver to by triode V6 through C9, concussion and frequency multiplier circuit that original papers such as variable capacitance diode VD6 and crystal JT are formed, become fixing nonadjustable 400MHZ frequency-modulated wave, by L3, C16 selects, be coupled to the drive(r) stage of forming by V7 and peripheral cell thereof through C17 and encourage amplification, be coupled to the power amplifier of forming by V8 and peripheral cell thereof through C19 again and carry out power amplification, radiofrequency signal after the amplification by L8 and C23 series resonant circuit after, through C24, C25, C26 and L9, the antenna matching network that L10 forms is outwards launched.
Claims (2)
1. a vehicle-mounted intercom has radio reception and radio transmission function, it is characterized in that: this machine control circuit has an adjustable resistance (5), regulates the transmitting power that this adjustable resistance promptly changes this intercom.
2. vehicle-mounted intercom according to claim 1 is characterized in that: the broadcast transmission key that main frame is provided with is duplex push-button switch (9), presses radiating circuit connection in these switching on and shutting down; Press radiating circuit disconnection in this push-button switch (9) machine once more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720126678XU CN201171228Y (en) | 2007-08-08 | 2007-08-08 | Vehicle-mounted close range public broadcast interphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720126678XU CN201171228Y (en) | 2007-08-08 | 2007-08-08 | Vehicle-mounted close range public broadcast interphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201171228Y true CN201171228Y (en) | 2008-12-24 |
Family
ID=40210278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720126678XU Expired - Fee Related CN201171228Y (en) | 2007-08-08 | 2007-08-08 | Vehicle-mounted close range public broadcast interphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201171228Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105187081A (en) * | 2014-06-20 | 2015-12-23 | 泉州市琪祥电子科技有限公司 | Vehicle interphone |
-
2007
- 2007-08-08 CN CNU200720126678XU patent/CN201171228Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105187081A (en) * | 2014-06-20 | 2015-12-23 | 泉州市琪祥电子科技有限公司 | Vehicle interphone |
| CN105227206A (en) * | 2014-06-20 | 2016-01-06 | 泉州市琪祥电子科技有限公司 | A kind of novel on-vehicle intercom |
| CN105187081B (en) * | 2014-06-20 | 2018-03-27 | 泉州市琪祥电子科技有限公司 | A kind of Vehicular intercom |
| CN105227206B (en) * | 2014-06-20 | 2018-03-27 | 泉州市琪祥电子科技有限公司 | A kind of novel on-vehicle intercom |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Song Aimin Document name: Notification of Termination of Patent Right |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081224 Termination date: 20090908 |