CN203522727U - Two way radio - Google Patents
Two way radio Download PDFInfo
- Publication number
- CN203522727U CN203522727U CN201320668060.1U CN201320668060U CN203522727U CN 203522727 U CN203522727 U CN 203522727U CN 201320668060 U CN201320668060 U CN 201320668060U CN 203522727 U CN203522727 U CN 203522727U
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- CN
- China
- Prior art keywords
- antenna
- fingerstall
- intercom
- contact ring
- intensifier
- 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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- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
- Telephone Set Structure (AREA)
Abstract
The utility model discloses a two way radio, which comprises a machine body provided with a power supply, an antenna, a knob, a display screen, indicating lamps and an antenna enhancing device which are arranged on the machine body, wherein the antenna enhancing device comprises a connecting signal line, a contact ring and a fingerstall, the fingerstall is arranged at a position, corresponding to a thumb of a hand part, on the machine body, the fingerstall is of a hollow structure and is matched with the thumb of human body, the contact ring is arranged on the inwall of the fingerstall and is coaxially arranged with the fingerstall, and the contact ring is electrically connected to the antenna through the connecting signal line. The two way radio has the advantages of simple structure and convenient application, the antenna is connected to the human body through the antenna enhancing device, and the human body is served as an external part of the antenna, thereby effectively enhancing the signal transmission performance of the antenna, and improving the signal quality and communication effect of the two way radio.
Description
Technical field
The utility model relates to a kind of Wireless Telecom Equipment, particularly a kind of intercom.
Background technology
The English name of intercom is two way radio, and it is a kind of bidirectional mobile communication instrument, without any need for network support in the situation that, just can converse, and does not have telephone expenses to produce, and is applicable to the occasion of relatively fixing and frequently conversing.Intercom comprises radiating portion and receiving unit; Radiating portion is the radio-frequency carrier signal that phase-locked loop and voltage controlled oscillator (VCO) produce transmitting, and through Hyblid Buffer Amplifier, excitation is amplified, power amplifier, produce specified radio-frequency power, through antenna low pass filter, suppress harmonic components, then by antenna transmission, go out.Receiving unit is that receiving unit is double superheterodyne mode, from the signal of antenna input, after transmitting-receiving change-over circuit and band pass filter, carry out radio frequency amplification, at process band pass filter, enter a mixing, by the amplifying signal from radio frequency with from the first local oscillation signal of phase-locked loop frequency synthesizer circuit in the first frequency mixer place mixing and generate the first intermediate-freuqncy signal.The first intermediate-freuqncy signal is further eliminated the noise signal of neighboring trace by crystal filter.Filtered the first intermediate-freuqncy signal enters intermediate frequency process chip, with the second local oscillation signal again mixing generate the second intermediate-freuqncy signal, the second intermediate-freuqncy signal, by after a useless spurious signal of ceramic filter filtering, is exaggerated and frequency discrimination, produces audio signal.Audio signal, by amplification, band pass filter, the circuit such as postemphasis, enters volume control circuit and power amplifier and amplifies, and drives loud speaker, obtains the required information of people.
The speech quality major influence factors of intercom comprises system factor and environmental factor.System parameters 1) output power of transmitter is stronger, and the coverage transmitting is larger, and communication distance is also far away.But transmitting power can not be excessive, and transmitting power is excessive, not only power consumption, affects power amplifier component life, and interference is strong, affects other people communication effect, also can produce radiation pollution.The radio regulatory organization of various countries has clearly regulation to the transmitting power of communication equipment.2) receiving sensitivity of communication equipment is higher, and communication distance is just far away.Environmental factor environmental factor mainly contains the density of path, trees, the electromagnetic interference of environment, building, weather condition and landform difference etc.These factors and some other parameter directly affect field intensity and the coverage of signal.Other influencing factor of intercom
1) battery electric quantity is not enough, and when battery electric quantity is not enough, speech quality can variation.When serious, have noise and occur, affect normal talking.
2) antenna match, the frequency range of antenna and machine frequency range are inconsistent, and antenna impedance is not mated, and all can have a strong impact on speech range.For the user, will note antenna to tighten when using antenna instead, the antenna that can not at will use non-producer to provide in addition, can not use the antenna that does not meet machine frequency.
3) quality of tonequality depends primarily on preemphasis and deaccentuator, also has at present more advanced speech processing circuit " application of voice compressor-expander and low-level expansion circuit ", and this has good effect for fidelity voice.
4) affect the factor of intercom speech range and effect also relevant with season, be better than winter summer.
Utility model content
For addressing the above problem, the utility model discloses a kind of intercom, simple in structure, easy to use, by the antenna intensifier arranging, effectively strengthen the signal transmission capabilities of antenna, improved signal quality and the communication effect of intercom.
The disclosed intercom of the utility model, comprise be provided with power supply body, be arranged on antenna, knob, display screen, indicator light, antenna intensifier on body, described antenna intensifier comprises connection holding wire, contact ring and fingerstall, described fingerstall is arranged on body corresponding to people's hand thumb position, described fingerstall is hollow structure and matches with human body thumb, described contact ring is arranged on fingerstall inwall and contact ring and fingerstall coaxially arrange, and described contact ring is electrically connected to antenna by connecting holding wire.The disclosed intercom of the utility model, simple in structure, easy to use, by antenna intensifier, antenna is connected to human body, with this external part as antenna of human body, thereby effectively strengthen the signal transmission capabilities of antenna, signal quality and the communication effect of intercom have been improved, by the fingerstall arranging, intercom is connected on staff thumb simultaneously, prevent that intercom is in use because accident is fallen damage, time easy to use, also improve the useful life of intercom, reduced the cost of working service.
A kind of improvement of the disclosed intercom of the utility model, described antenna intensifier also comprises contact plate, the coated body surface bottom that is arranged on of described contact plate, described contact plate is electrically connected to antenna by connecting holding wire, and described contact plate is that stainless steel metal plate and surface are provided with anti-skidding rib.This improvement, by the contact plate arranging, is convenient to antenna to be connected with human body, the quality that improves signal connection be connected effect, reduced equipment failure rate simultaneously, and can improve the purchase capabilities of intercom, easy to use.
Another improvement of the disclosed intercom of the utility model, described intercom also comprises minisize dc electric generator and rectifying device, described minisize dc electric generator arranges bottom, body lower end, described rectifying device is arranged in body, and described minisize dc electric generator is exported and is connected to power supply by rectifying device.This improvement is by the minisize dc electric generator and the rectifying device that arrange, can be for intercom provides power supply and charge function under the state of emergency, thereby continuous use ability and the result of use of intercom have been improved, thereby greatly improved the adaptive capacity of intercom to different environments for use, improved ease of use and the practicality of intercom.
The disclosed intercom of the utility model, has solved the impact of antenna on communication quality effectively, has improved the signal quality of intercom, there is good long-time continuous simultaneously and use ability and flying power, easy to use, low to the power reguirements of environment for use, adaptable to environment for use.
Accompanying drawing explanation
The structural representation of Fig. 1, the disclosed a kind of intercom of the utility model.
Reference numerals list:
1, body; 2, antenna; 3, knob;
4, display screen; 5, indicator light; 6, fingerstall;
7, contact plate.
Embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the utility model, should understand following embodiment and only for the utility model is described, be not used in restriction scope of the present utility model.It should be noted that, word 'fornt', 'back', " left side ", " right side ", "up" and "down" that use is described below refer to the direction in accompanying drawing, and word " interior " and " outward " refer to respectively the direction towards or away from specific features geometric center.
As shown in Figure 1, the disclosed intercom of the utility model, comprise be provided with power supply body 1, be arranged on antenna 2, knob 3, display screen 4, indicator light 5, antenna intensifier on body 1, described antenna intensifier comprises connection holding wire, contact ring and fingerstall 6, described fingerstall 6 is arranged on body 1 corresponding to people's hand thumb position, described fingerstall 6 is hollow structure and matches with human body thumb, described contact ring is arranged on fingerstall 6 inwalls and contact ring and fingerstall 6 coaxially arrange, and described contact ring is electrically connected to antenna 2 by connecting holding wire.The disclosed intercom of the utility model, simple in structure, easy to use, by antenna intensifier, antenna is connected to human body, with this external part as antenna of human body, thereby effectively strengthen the signal transmission capabilities of antenna, signal quality and the communication effect of intercom have been improved, by the fingerstall arranging, intercom is connected on staff thumb simultaneously, prevent that intercom is in use because accident is fallen damage, time easy to use, also improve the useful life of intercom, reduced the cost of working service.
As a kind of preferred, described antenna intensifier also comprises contact plate, the coated surperficial bottom of body 1 that is arranged on of described contact plate 7, described contact plate 7 is electrically connected to antenna 2 by connecting holding wire, and described contact plate 7 is provided with anti-skidding rib for stainless steel metal plate and surface.By the contact plate arranging, be convenient to antenna to be connected with human body, the quality that improves signal connection be connected effect, reduced equipment failure rate simultaneously, and can improve the purchase capabilities of intercom, easy to use.
As a kind of preferred, described intercom also comprises minisize dc electric generator and rectifying device, described minisize dc electric generator arranges bottom, body lower end, and described rectifying device is arranged in body 1, and described minisize dc electric generator is exported and is connected to power supply by rectifying device.By the minisize dc electric generator and the rectifying device that arrange, can be for intercom provides power supply and charge function under the state of emergency, thereby continuous use ability and the result of use of intercom have been improved, thereby greatly improved the adaptive capacity of intercom to different environments for use, improved ease of use and the practicality of intercom.
The disclosed intercom of the utility model, has solved the impact of antenna on communication quality effectively, has improved the signal quality of intercom, there is good long-time continuous simultaneously and use ability and flying power, easy to use, low to the power reguirements of environment for use, adaptable to environment for use.
The disclosed technological means of the utility model scheme is not limited only to the disclosed technological means of above-mentioned technological means, also comprises the technical scheme being comprised of above technical characterictic combination in any.The above is embodiment of the present utility model; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications are also considered as protection range of the present utility model.
Claims (3)
1. an intercom, comprise be provided with power supply body, be arranged on antenna, knob, display screen and indicator light on body, it is characterized in that: described intercom also comprises antenna intensifier, described antenna intensifier comprises connection holding wire, contact ring and fingerstall, described fingerstall is arranged on body corresponding to people's hand thumb position, described fingerstall is hollow structure and matches with human body thumb, described contact ring is arranged on fingerstall inwall and contact ring and fingerstall coaxially arrange, and described contact ring is electrically connected to antenna by connecting holding wire.
2. intercom according to claim 1, it is characterized in that: described antenna intensifier also comprises contact plate, the coated body surface bottom that is arranged on of described contact plate, described contact plate is electrically connected to antenna by connecting holding wire, and described contact plate is that stainless steel metal plate and surface are provided with anti-skidding rib.
3. intercom according to claim 1 and 2, it is characterized in that: described intercom also comprises minisize dc electric generator and rectifying device, described minisize dc electric generator arranges bottom, body lower end, described rectifying device is arranged in body, and described minisize dc electric generator is exported and is connected to power supply by rectifying device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320668060.1U CN203522727U (en) | 2013-10-29 | 2013-10-29 | Two way radio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320668060.1U CN203522727U (en) | 2013-10-29 | 2013-10-29 | Two way radio |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203522727U true CN203522727U (en) | 2014-04-02 |
Family
ID=50381596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320668060.1U Expired - Fee Related CN203522727U (en) | 2013-10-29 | 2013-10-29 | Two way radio |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203522727U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104363026A (en) * | 2014-11-24 | 2015-02-18 | 成都双奥阳科技有限公司 | Multifunctional interphone |
-
2013
- 2013-10-29 CN CN201320668060.1U patent/CN203522727U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104363026A (en) * | 2014-11-24 | 2015-02-18 | 成都双奥阳科技有限公司 | Multifunctional interphone |
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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: 20140402 Termination date: 20151029 |
|
| EXPY | Termination of patent right or utility model |