CN202798690U

CN202798690U - Voice digital wireless transmitter

Info

Publication number: CN202798690U
Application number: CN2012202674471U
Authority: CN
Inventors: 张文军
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-06-07
Filing date: 2012-06-07
Publication date: 2013-03-13
Anticipated expiration: 2022-06-07

Abstract

The utility model discloses a voice digital wireless transmitter. The voice digital wireless transmitter comprises a transmission unit which collects voices and digitalizes the voices for transmission, and a reception unit which receives an audio signal for display. The transmission unit comprises an audio input module, a voice coder-decoder and a 433MHz digital wireless transmission module, wherein the audio input module is connected with the voice coder-decoder, and a digital signal processing single-chip microcomputer is arranged between the voice coder-decoder and the 433 MHz digital wireless transmission module. The reception unit comprises a wireless reception module using the 433MHz digital wireless packet encryption technology, a single-chip microcomputer, and a voice coder-decoder which are sequentially connected, wherein the voice coder-decoder is connected with an earphone for listening to the audio. According to the utility model, the wireless voice transmitter uses the 433 MHz digital wireless packet encryption technology, which, compared with the analog wireless technology, has higher safety, better anti-interference capability, and larger transmission distance with better stability with the same power consumption.

Description

A kind of speech digit Wireless Transmitter

Technical field

The utility model relates to the voice transmission technology field, specifically a kind of electronic product that utilizes 433MHz digital radio transferring voice.

Background technology

In a lot of scenic spots, the guide uses Portable sound amplifier to explain to the visitor, if the visitor is less at present, also can catch explanation reluctantly, in the face of larger tourism troop, be difficult to allow all visitors catch explanation, probably have influence on visitor's the mood of playing.And this mode allows the quiet comfortable scenic spot of many scripts become noisy such as the downtown area, destroyed the originally environment of harmony of scenic spot.

The utility model content

For the problems referred to above, the utility model aims to provide a kind of radio speech transmitting device, realizes cheaply that in order to stable longer-distance wireless speech transmits.

For realizing this technical purpose, scheme of the present utility model is: a kind of speech digit Wireless Transmitter, comprise the receiving unit of collecting voice and the outer emitting module of sending out of digitlization and received audio signal and broadcast, emitting module is made of audio frequency input module, audio coder ﹠ decoder (codec), 433MHz digital radio transmitter module; The audio frequency input module connects audio coder ﹠ decoder (codec), also is provided with a Digital Signal Processing single-chip microcomputer between this audio coder ﹠ decoder (codec) and the 433MHz digital radio transmitter module; Receiving unit comprises wireless receiving module, single-chip microcomputer, the audio coder ﹠ decoder (codec) of the 433MHz digital radio encryption group technology that connects successively; Described audio coder ﹠ decoder (codec) is connected with the earphone of listening to audio.

As preferably, described 433MHz digital radio transmitter module also is provided with an antenna that transmits.

As preferably, described wireless receiving module also is provided with an antenna that receives signal.

The beneficial effects of the utility model are: the guide can explain content to the visitor clearly with crossing radio speech transmitting device, does not need with the aid of a megaphone, has solved the problem of scenic spot noise; What simultaneously radio speech transmitting device adopted is that the 433MHz digital radio is encrypted group technology, has the fail safe higher than artificial antenna technology, and better antijamming capability is arranged, under the same power more stable transfer to farther distance; Adopt simultaneously data packet head to encrypt group technology, avoid between the different user groups interference, crosstalk.

Description of drawings

Fig. 1 is the theory structure block diagram of the utility model emitting module;

Fig. 2 is the theory structure block diagram of the utility model receiving unit.

Embodiment

Below in conjunction with the drawings and specific embodiments the utility model is described in further details.

A kind of speech digit Wireless Transmitter of the utility model specific embodiment, comprise corresponding emitting module and receiving unit, described emitting module comprises audio frequency input module, audio coder ﹠ decoder (codec), single-chip microcomputer, the wireless transmitter module of 433MHz digital radio encryption group technology and the antenna that transmits that connects successively, as shown in Figure 1; Described receiving unit comprises the antenna of the reception signal that connects successively, the earphone that the 433MHz digital radio is encrypted wireless receiving module, single-chip microcomputer, audio coder ﹠ decoder (codec) and the listening to audio of group technology, as shown in Figure 2.

Audio decoder plate in the utility model has following functions: the output of microphone phonetic entry, audio signal, loudspeaker raise one's voice put outward, the input of TF card voice document is play, pattern is shown in USB flash disk voice document input broadcast, FM radio reception, LED screen display and played file, infra-red remote control.Wireless transmitter module function: after the Audio Signal Processing with decoding deck input, give on the same group receiver by wireless signal transmission.

The utility model adopts the 433MHz digital radio to encrypt group technology: 20 receivers of per 1 transmitter strap form one group, can allow 100 groups to use simultaneously and do not interfere with each other in the same scope; Every group is used one group of unique enciphered data as the data packet head of wireless transmission, first recognition data packet header before each receiver receive data, the signal of cohort under receiving only, avoid between the different cohorts interference, crosstalk.

The above; it only is preferred embodiment of the present utility model; not in order to limiting the utility model, any trickle modification that every foundation technical spirit of the present utility model is done above embodiment, be equal to and replace and improve, all should be included within the protection range of technical solutions of the utility model.

Claims

1. a speech digit Wireless Transmitter comprises the receiving unit of collecting voice and the outer emitting module of sending out of digitlization and received audio signal and broadcast, it is characterized in that:

Emitting module is made of audio frequency input module, audio coder ﹠ decoder (codec), 433MHz digital radio transmitter module; The audio frequency input module connects audio coder ﹠ decoder (codec), also is provided with a Digital Signal Processing single-chip microcomputer between this audio coder ﹠ decoder (codec) and the 433MHz digital radio transmitter module;

Receiving unit comprises wireless receiving module, single-chip microcomputer, the audio coder ﹠ decoder (codec) of the 433MHz digital radio encryption group technology that connects successively; Described audio coder ﹠ decoder (codec) is connected with the earphone of listening to audio.

2. Wireless Transmitter according to claim 1 is characterized in that, described 433MHz digital radio transmitter module also is provided with an antenna that transmits.

3. Wireless Transmitter according to claim 1 is characterized in that, described wireless receiving module also is provided with the antenna of a reception signal.