CN205510026U - Miniature intercom - Google Patents

Abstract

The utility model discloses a miniature intercom, including interphone body, microphone, press keyboard, status indicator lamp, speaker, antenna and control circuit, its characterized in that: control circuit is equipped with central processing unit to central processing unit is the center, and vocoder, audio frequency module, bluetooth module, radio frequency module, earphone interface, button component do not link to each other with central processing unit signal transmission, and the audio frequency module links to each other with microphone, speaker respectively, radio frequency module and antenna connection, the utility model discloses an intercom circuit design is novel, and whole small, stand -by time is long, can not need during the use hands, and the both hands that can fully liberate the user more can be expanded and use with the interconnection at other communication equipment or terminal, and the communication function is flexible and varied.

Description

a miniature walkie-talkie

technical field

The utility model relates to the field of electronic communication equipment, in particular to an intercom.

Background technique

Due to the characteristics of walkie-talkie cluster intercom and instant intercom and no communication service fee, it has great application prospects. However, the personal portable walkie-talkies currently on the market are basically hand-held walkie-talkies. When using them, they must be held and used close to the microphone. The overall volume is relatively large, which is inconvenient to carry and use. On the other hand, the function of traditional walkie-talkies is relatively single, and the intercom function can only be realized by pressing the PTT (Push to Talk) button, which occupies the user's hands during use, and will cause inconvenience in certain environments. At the same time, traditional walkie-talkies cannot be interconnected with modern communication equipment and terminals, which greatly limits their development and application. Therefore, traditional walkie-talkies need to be improved and improved.

Utility model content

The purpose of this utility model is to provide a miniature walkie-talkie to overcome the above-mentioned problems of the existing walkie-talkies which are too large in size, inconvenient to carry, and inconvenient to use.

The purpose of this utility model is achieved through the following technical solutions:

A miniature walkie-talkie, including a walkie-talkie body, a microphone, a button group, a status indicator light, a loudspeaker, an antenna and a control circuit, is characterized in that: the control circuit is provided with a central processing unit, with the central processing unit as the center, and a vocoder , an audio module, a bluetooth module, a radio frequency module, an earphone jack, and a button group are respectively connected to the central processing unit for signal transmission, the audio module is respectively connected to a microphone and a loudspeaker, and the radio frequency module is connected to an antenna.

Further, the control circuit is provided with a power management circuit and a charging and discharging circuit, the battery supplies power to the walkie-talkie body through the power management circuit, and the charging and discharging circuit is connected with a charging interface.

The key set is controlled and connected to the central processing unit, and the key set includes a PTT key, an on/off key, a pairing key, and a volume key, and each key is located in the hand-held area of the walkie-talkie.

The earphone interface can replace the loudspeaker to receive voice signals.

The bluetooth module realizes the wireless communication connection between the walkie-talkie and the external device through bluetooth, selects to enter the bluetooth pairing mode through the combination of the switch key and the pairing key, after starting the special app on the external device, press the pairing key to connect through the bluetooth module For external devices, the audio files are transmitted to the central processing unit through the Bluetooth module for processing, and after the vocoder is decompressed, the audio module transmits them to the speaker for playback, realizing the Bluetooth broadcasting function.

The charging interface can be used as a data interface to connect with software upgrading equipment.

The walkie-talkie body also includes a back clip for fixing the walkie-talkie body.

Compared with the prior art, the beneficial effects of the utility model are:

1. Each circuit module of the utility model is small in size and highly integrated in the body of the walkie-talkie. The overall product is small in size, light in weight, and easy to carry. Each button is located in the thumb operation area, which is convenient for hand-held operation and adjustment of various functions.

2. The utility model is equipped with a Bluetooth module, which changes the performance of the traditional single call, greatly increases the communication performance of the walkie-talkie, and can realize information communication with different devices and multiple devices.

3. The charging interface can also be used as a data upgrade interface, which is easy for product maintenance and maintains the advanced performance of the product.

4. The earphone interface can replace the speaker, and it does not need to be held in hand when using it, which can fully liberate the user's hands and is more convenient and flexible to use.

5. The utility model can be set to the automatic intercom function through the mode, and the voice call can be completed without pressing the PTT key during use, which makes the operation more convenient.

Description of drawings

In order to illustrate the technical solution of the utility model more clearly, the following will introduce in detail in conjunction with the embodiments and accompanying drawings.

Figure 1 is a schematic diagram of the front view of the appearance of the utility model.

Figure 2 is a schematic rear view of the utility model.

Fig. 3 is a circuit structure connection block diagram of the utility model.

Explanation of reference numerals: 11, headphone jack; 12, microphone; 13, button group; 14, status indicator light; 15, loudspeaker; 16, antenna; 18, battery; 19, charging interface; 131, PTT key; 132, switch Machine key; 133, pairing key; 134, volume key; 171, vocoder; 172, power management circuit; 173, charging and discharging circuit; 174, central processing unit; 175, audio module; 176, bluetooth module; 177, radio frequency module; 2, back clip.

detailed description

The preferred embodiments of the utility model will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the utility model can be more easily understood by those skilled in the art, so as to make a clearer definition of the protection scope of the utility model.

As shown in Fig. 1--Fig. 3, a kind of miniature walkie-talkie of the present embodiment, its structure and circuit feature are as follows:

The miniature walkie-talkie includes a walkie-talkie body and a back clip 2. The walkie-talkie body is provided with an earphone jack 11, a microphone 12, a button group 13, a status indicator light 14, a speaker 15, an antenna 16, and a charging interface 19. The inside of the walkie-talkie body is provided with a control circuit and a battery. 18. The key set 13 includes: PTT key 131, switch key 132, pairing key 133, volume key 134, described control circuit is provided with vocoder 171, power management circuit 172, charging and discharging circuit 173, CPU 174 , an audio module 175, a bluetooth module 176 and a radio frequency module 177. The back clip 2 is used for fixing the body of the walkie-talkie, and it does not need to be held in hand during use, which can fully liberate the user's hands.

Wherein, the control circuit takes the central processing unit 174 as the core and center, the vocoder 171, the power management circuit 172, the charging and discharging circuit 173, the audio module 175, the bluetooth module 176, the radio frequency module 177, the earphone interface 11 and the button group 13 respectively and The central processing unit 174 is connected to the signal, the audio module 175 is connected to the microphone 12 and the speaker 15 respectively, and the battery 18 provides power for the walkie-talkie through the power management circuit 172 . The switch key 132, the pairing key 133, and the volume key 134 are located on both sides of the walkie-talkie body, which are convenient to hold and operate. The battery 18 can be a dry battery or a rechargeable battery. The built-in Bluetooth module 171 of the miniature walkie-talkie control circuit is used In order to realize the wireless connection between the walkie-talkie body and external devices, the charging interface 19 of the miniature walkie-talkie can also be used as a data interface for equipment software upgrades, and the earphone interface 11 of the miniature walkie-talkie can be used to replace the speaker 15 to receive voice signals.

Work and control process: After long pressing the switch button 132, the miniature walkie-talkie enters the standby state. The working mode can be selected by combining the switch button 132 and the pairing button 133. After the voice prompt enters the manual intercom mode, press the pairing button at this time The key 133 and the volume key 134 are combined to set the intercom channel. After setting the channel, press the PTT key 131 to start the intercom mode. At this time, the voice is picked up by the microphone 12 and processed by the audio module 175 and the central processing unit 174. After being compressed by the coder 171, the central processing unit 174 sends it to the radio frequency module 177. After modulation and amplification, the signal is sent out through the antenna 16, and the signal is received by the antenna of another miniature walkie-talkie in the same channel, and the radio frequency module modulates and demodulates the control circuit for processing. The voice signal is decompressed by the vocoder and sent to the audio module, and finally the voice signal is played through the speaker.

In the standby state, the automatic intercom mode can be selected through the combination of the switch key 132 and the pairing key 133. At this time, press the combination of the pairing key 133 and the volume key 134 to set the channel of the micro-intercom. After the microphone 12 picks up the voice, it is processed by the audio module 175 and the central processing unit 174. After being compressed by the vocoder 171, it is sent to the radio frequency module 177 by the central processing unit 174. After modulation and amplification, the signal is sent out through the antenna 16. The antenna of the miniature walkie-talkie receives the signal, the radio frequency module modulates and demodulates the control circuit to process the voice signal, and then decompresses it through the vocoder and transmits it to the audio module, and finally plays the voice signal through the speaker.

In the standby state, you can choose to enter the Bluetooth pairing mode through the combination of the switch key 132 and the pairing key 133. After starting the special APP on the mobile phone, press the pairing key 133 to connect to the mobile phone through the Bluetooth module 176, and the music files are transmitted through the Bluetooth module 176. After being processed by the central processing unit 174 and decompressed by the vocoder 171, the audio module 175 transmits it to the speaker 15 for playback, realizing the Bluetooth broadcasting function.

It should be understood that the utility model is not limited to the above-mentioned specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, all of which belong to the scope of protection of this patent.

Claims (7)

1. A miniature walkie-talkie, comprising a walkie-talkie body, a microphone, a button group, a status indicator light, a loudspeaker, an antenna and a control circuit, characterized in that: the control circuit is provided with a central processing unit, with the central processing unit as the center, the sound Encoder, audio module, bluetooth module, radio frequency module, headphone interface, button group are respectively connected with central processing unit signal transmission, audio module is connected with microphone, loudspeaker respectively, radio frequency module is connected with antenna. 2. The miniature walkie-talkie according to claim 1, wherein the control circuit is provided with a power management circuit and a charging and discharging circuit, the battery provides power for the walkie-talkie body through the power management circuit, and the charging and discharging circuit is connected with a charging interface. 3. The miniature walkie-talkie according to claim 1 or 2, characterized in that: the key set is connected to the central processing unit, and the key set includes a PTT key, an on/off key, a pairing key, and a volume key, and each key is located on the intercom. within the handheld area. 4. The miniature walkie-talkie according to claim 1, characterized in that: the earphone interface can replace the speaker to receive voice signals. 5. The miniature walkie-talkie according to claim 1 or 2, characterized in that: the Bluetooth module realizes the wireless communication connection between the walkie-talkie and the external device through Bluetooth, and enters the Bluetooth pairing mode through the combination of the switch key and the pairing key, After starting the special APP on the external device, press the pairing button to connect the external device through the Bluetooth module. The audio file is transmitted to the central processing unit through the Bluetooth module for processing. After the vocoder is decompressed, the audio module transmits it to the speaker for playback, realizing Bluetooth broadcast. 6. The miniature walkie-talkie according to claim 2, characterized in that: the charging interface can be used as a data interface to connect with a software upgrading device. 7. The miniature walkie-talkie according to claim 1 or 2, characterized in that: the walkie-talkie body also includes a back clip for fixing the walkie-talkie body.