CN203387505U - Explosion-proof portable duplex wireless conversation device - Google Patents
Explosion-proof portable duplex wireless conversation device Download PDFInfo
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- CN203387505U CN203387505U CN201320448809.1U CN201320448809U CN203387505U CN 203387505 U CN203387505 U CN 203387505U CN 201320448809 U CN201320448809 U CN 201320448809U CN 203387505 U CN203387505 U CN 203387505U
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- explosion
- circuit
- duplex wireless
- electrophone
- conversation device
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Abstract
The utility model relates to an explosion-proof portable duplex wireless conversation device. The explosion-proof portable duplex wireless conversation device comprises a host machine and a head-mounted single-ear electrophone, wherein the host machine comprises a sealing casing, an upper end of the sealing casing is provided with an antenna, a volume switch and an audio cable connector, a front face of the sealing casing is provided with a display screen and buttons, the sealing casing is internally provided with an audio encoder/decoder, a control circuit, a radio frequency circuit and a display circuit, the audio encoder/decoder is connected with the head-mounted single-ear electrophone through an audio cable, the radio frequency circuit is connected with the antenna, and the control circuit is respectively connected with the audio encoder/decoder, the radio frequency circuit and the display circuit. The explosion-proof portable duplex wireless conversation device is technically characterized in that the explosion-proof portable duplex wireless conversation device integrates explosion-proof electrical technology, wireless communication technology, digital modulation technique and wireless network technology and is used for realizing full duplex centerless networking wireless communication in an explosive air environment.
Description
Technical field
The utility model belongs to wireless communication technology field, is specifically related to the portable duplex wireless communication of a kind of explosion-proof type.
Background technology
Current, the short haul connection contact in the combustible gas explosion environment such as oil field, colliery between the staff, the verbal system of use is mainly to take the wire communication form as main, and is nearly all half-duplex operation.Its shortcoming one is that wire communication not only needs a large amount of wirings, consumes ample resources, and is the communication of point-to-point fixed position, the instant messaging such as can not realize commanding anywhere or anytime, report; The 2nd, the particularity due to explosive gas atmosphere, exist hidden danger, and use hand-held the speech, and both hands that can not liberate people are engaged in other work; The 3rd, need to receive and dispatch conversion by ptt switch, can only side's speech the opposing party listen to, can not realize many people's communications such as many people discuss, many people confer; The 4th, the noise elimination thresholding of this series products is all generally fixed threshold, can not be regulated according to the size of environmental noise, when outside noise is large, can affect communication efficiency.
Summary of the invention
The technical problem that the utility model solves: design the portable duplex wireless communication of a kind of explosion-proof type, integrated explosion-proof electrification technology, wireless communication technology, digital modulation technique and radio network technique, for realizing that at explosive gas atmosphere full duplex is without center networking radio communication.
The technical solution of the utility model: the portable duplex wireless communication of a kind of explosion-proof type is comprised of main frame and wear-type monaural electrophone; Described main frame comprises seal casinghousing, and the seal casinghousing upper end is provided with antenna, volume switch, voice-frequency cable joint, and the front of seal casinghousing is provided with display screen and button; Be provided with audio coding/decoding device, control circuit, radio circuit and display circuit in seal casinghousing, described audio coding/decoding device is connected with wear-type monaural electrophone by voice-frequency cable, radio circuit is connected with antenna, and control circuit is connected with audio coding/decoding device, radio circuit and display circuit respectively.
Described audio coding/decoding device is the MAX9856ETL chip, and control circuit is STM32F105RCT6 mixed type microprocessor chip, and radio circuit is the ADF7020BCPZ chip.
Described wear-type monaural electrophone is formed by connecting by headring, earmuff, is provided with the differential transmitter of second order in described earmuff, and below is connected with transmitter.
The advantageous effect that the utility model compared with prior art has:
1, realize the many people liaison in explosive gas atmosphere, made between the hazardous environment personnel to keep information accurately to be passed on, improved fail safe.
2, the electrophone group adopts microtia cover monaural to wear form, and weight reduction, be easy to carry; And its transmitter adopts the differential transmitter of second order, can effectively suppress the external environment noise, has good noise robustness.
3, the LCDs on host panel can show electric weight, channel and channel occupancy situation, easy to operate.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model, and Fig. 2 is circuit structure FB(flow block) of the present utility model, and Fig. 3 is circuit theory diagrams of the present utility model.
Embodiment
1,2,3 a kind of embodiment of the present utility model is described by reference to the accompanying drawings.
The portable duplex wireless communication of a kind of explosion-proof type, be comprised of main frame 1 and wear-type monaural electrophone 2; Described main frame 1 comprises seal casinghousing 3, and seal casinghousing 3 upper ends are provided with antenna 4, volume switch 5, voice-frequency cable joint 6, and the front of seal casinghousing 3 is provided with display screen 7 and button 8; Be provided with audio coding/decoding device, control circuit, radio circuit and display circuit in seal casinghousing 3, described audio coding/decoding device is connected with wear-type monaural electrophone 2 by voice-frequency cable, radio circuit is connected with antenna 4, and control circuit is connected with audio coding/decoding device, radio circuit and display circuit respectively.Described wear-type monaural electrophone 2 is formed by connecting by headring 9, earmuff 10, is provided with the differential transmitter 11 of second order in described earmuff 10, and below is connected with transmitter 12.
The MAX9856ETL chip that described audio coding/decoding device adopts MAXIM company to produce, this integrated chip audio coding/decoding function, audio signal amplifier and audio-frequency power amplifier, indoor design simultaneously has filter circuit.The effect of encoder is by the CVSD code conversion, to become digital signal to deliver to control circuit simulated audio signal to be modulated.Otherwise decoder effect.The audio signal that audio signal amplifier is sent here transmitter is amplified processing, suppresses the external environment noise simultaneously.Audio-frequency power amplifier is in receiving loop, and the audio signal after reduction is amplified to enough large power, to promote receiver, sounds.
The STM32F105RCT6 mixed type microprocessor chip that described control circuit adopts ST company to produce.All control functions are completed by this microprocessor, and it provides the frequency control signal of frequency synthesizer for radio circuit, realize button operation and show controlling, and complete the functions such as the detection of cell voltage and computing that sound door capable of being opened limit arranges and control.
The ADF7020BCPZ chip that described radio circuit adopts ANALOG company to produce, this is the monolithic UHF radio transmitting and receiving chip that aims at the ISM band design.The GFSK modulation-demodulation technique that its adopt to be optimized can transmit the data of the highest 78.8kbps under the effective bandwidth of 155.6kHz.There is standby mode, the more power saving and efficient of working.
During use, main frame is suspended in waistband or pocket, electrophone is worn on the head, the full-duplex communication pattern, without by the ptt switch people for receiving and dispatching conversion, four timeslot number modes can realize that four-player talks simultaneously, keep many people mutually to get in touch with whenever and wherever possible.Be mainly used in the explosive gas atmospheres such as oil field, mine.
Claims (3)
1. the portable duplex wireless communication of explosion-proof type, it is characterized in that: described communication is comprised of main frame (1) and wear-type monaural electrophone (2); Described main frame (1) comprises seal casinghousing (3), and seal casinghousing (3) upper end is provided with antenna (4), volume switch (5), voice-frequency cable joint (6), and the front of seal casinghousing (3) is provided with display screen (7) and button (8); Seal casinghousing is provided with audio coding/decoding device, control circuit, radio circuit and display circuit in (3), described audio coding/decoding device is connected with wear-type monaural electrophone (2) by voice-frequency cable, radio circuit is connected with antenna (4), and control circuit is connected with audio coding/decoding device, radio circuit and display circuit respectively.
2. the portable duplex wireless communication of explosion-proof type according to claim 1, it is characterized in that: described audio coding/decoding device is the MAX9856ETL chip, control circuit is STM32F105RCT6 mixed type microprocessor chip, and radio circuit is the ADF7020BCPZ chip.
3. the portable duplex wireless communication of explosion-proof type according to claim 1 and 2, it is characterized in that: described wear-type monaural electrophone (2) is formed by connecting by headring (9), earmuff (10), be provided with the differential transmitter of second order (11) in described earmuff (10), below is connected with transmitter (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320448809.1U CN203387505U (en) | 2013-07-25 | 2013-07-25 | Explosion-proof portable duplex wireless conversation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320448809.1U CN203387505U (en) | 2013-07-25 | 2013-07-25 | Explosion-proof portable duplex wireless conversation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203387505U true CN203387505U (en) | 2014-01-08 |
Family
ID=49875953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320448809.1U Expired - Lifetime CN203387505U (en) | 2013-07-25 | 2013-07-25 | Explosion-proof portable duplex wireless conversation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203387505U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105306649A (en) * | 2015-11-09 | 2016-02-03 | 张效瑛 | Portable wireless communication system applied to oilfield drilling operation |
-
2013
- 2013-07-25 CN CN201320448809.1U patent/CN203387505U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105306649A (en) * | 2015-11-09 | 2016-02-03 | 张效瑛 | Portable wireless communication system applied to oilfield drilling operation |
| CN105306649B (en) * | 2015-11-09 | 2018-06-05 | 张效瑛 | A kind of portable radio communication system for oil drilling |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140108 |
|
| CX01 | Expiry of patent term |