CN212649453U - Multimode handheld terminal for emergency communication - Google Patents

Abstract

The utility model discloses a multimode handheld terminal for emergent communication, include: the WiFi module is connected to the router through a WiFi antenna; the MCU is also used for receiving information sent by the MCU and entering a working mode; and the MIC voice input conversion module is connected with the MIC through the emission key and is used for receiving the voice signal sent by the MIC, converting the voice signal into a digital signal and sending the digital signal. And the DMR digital signal processing and sending module is used for receiving the digital signal sent by the MIC voice input conversion module and sending the digital signal to the MCU. And the wireless transceiving radio frequency module is used for sending the signal of the preset channel to the DMR digital signal processing receiving module. By using the multi-mode handheld terminal, a user can freely switch between the 4G network and the WiFi according to actual needs, and the optimal communication quality is kept.

Description

Multimode handheld terminal for emergency communication

[ technical field ] A method for producing a semiconductor device

The utility model belongs to the technical field of emergency communication, especially, relate to a multimode handheld terminal for emergency communication.

[ background of the invention ]

In the prior art, when an emergency accident occurs, the emergency rescue environment is often special compared with the common environment, for example, the underground coal mine rescue environment is hundreds of meters underground, due to the limitation of conditions and cost, most of the existing underground 4G networks are fully covered, so that the 4G networks are difficult to communicate and talk back in rescue, for example, in the forest fire scene rescue environment, the fire scene often extends for tens of kilometers, and the communication distance is only a few kilometers by using the traditional DMR digital talk-back technology, so that signals cannot be received when the communication distance exceeds the range, and the rescue work is hindered.

[ Utility model ] content

The utility model aims at providing a terminal is handed to multimode based on 4G and intercom technique has designed the wiFi module, makes the user freely switch at 4G network and wiFi according to actual need, keeps optimal communication quality.

The utility model adopts the following technical scheme: a multimode hand-held terminal based on 4G and intercom technology comprises: the WiFi module is connected to the router through a WiFi antenna; the MCU is also used for receiving information sent by the MCU and entering a working mode; and the MIC voice input conversion module is connected with the MIC through the emission key and is used for receiving the voice signal sent by the MIC, converting the voice signal into a digital signal and sending the digital signal.

And the DMR digital signal processing and sending module is used for receiving the digital signal sent by the MIC voice input conversion module and sending the digital signal to the MCU. And the wireless transceiving radio frequency module is used for sending the signal of the preset channel to the DMR digital signal processing receiving module. The MCU is used for receiving the digital signals sent by the DMR digital signal processing and sending module, coding and encrypting the digital signals and feeding the digital signals back to the DMR digital signal processing and sending module; the device comprises a wireless transceiving radio frequency module, a DMR digital signal processing and receiving module, a signal processing and receiving module and a signal processing and receiving module, wherein the wireless transceiving radio frequency module is used for receiving a signal of a preset channel sent by the wireless transceiving radio frequency module, processing the signal to obtain a digital signal and feeding the digital signal back to the DMR digital signal processing; and the LCD is also used for receiving information input by external input keys and displaying the information on the LCD. The voice receiving and converting module is used for receiving the digital signals sent by the DMR digital signal processing and receiving module, converting the digital signals into voice signals and outputting the voice signals by a loudspeaker; the 4G communication module is communicated with the 4G base station through a 4G communication antenna and is connected with the SIM card base; the MCU is also connected with the control circuit; the casing, each module and SIM card base all set up in the casing.

Furthermore, the WiFi module, the MCU, the 4G communication module, the voice receiving and converting module, the DMR digital signal processing and sending module, the DMR digital signal processing and receiving module and the voice receiving and converting module are all connected with the power management module, and the power management module is also connected with the lithium battery.

Furthermore, the external input keys are all arranged on the shell and comprise a confirmation key, two selection keys, four direction keys, an up-down direction key, a left-right direction key, a dialing key, a hang-up key and a 12-digit symbol input key.

Furthermore, a volume control key is arranged on the shell and connected with the MCU.

The utility model has the advantages that: 1. the full-network communication and multi-band mobile communication talkback can be realized. 2. The WiFi module is designed, so that a user can freely switch between the 4G network and the WiFi according to actual needs, and the optimal communication quality is kept.

[ description of the drawings ]

Fig. 1 is a schematic block diagram of a multimode handheld terminal for emergency communication according to the present invention;

wherein: 1. the mobile phone comprises a shell, 2 lithium batteries, 3 SIM card bases, 4.4G communication antennas, 5 external input keys, 6 liquid crystal display screens, 7 WiFi antennas, 8 MICs, 9 loudspeakers, 10 emission keys, 11 volume control keys, 12 channel adjusting knobs, 13 power management modules, 14.4G communication modules, 15 WiFi modules, 16 MIC sound input conversion modules, 17 DMR digital signal processing and sending modules, 18 MCU, 19 DMR digital signal processing and receiving modules, 20 voice receiving and converting modules, 21 wireless receiving and sending radio frequency modules, 22 wireless receiving and sending antennas and 23 external keyboard input modules.

[ detailed description ] embodiments

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

The utility model discloses a multimode handheld terminal for emergent communication, as shown in fig. 1, include: the WiFi module 15 is connected to the router through the WiFi antenna 7 and is networked with the outside; and is also used for receiving information sent by the MCU18 and entering an operating mode. And the MIC voice input conversion module 16 is connected with the MIC8 through the transmitting key 10 and is used for receiving the voice signal sent by the MIC8, converting the voice signal into a digital signal and sending the digital signal.

A multimode hand-held terminal used for emergent communication also includes DMR digital signal processing and sending module 17, which is used to receive the digital signal sent by MIC voice input conversion module 16, and send it to MCU18, and MCU18 encodes and encrypts the digital signal; the digital signal encoded and encrypted by the MCU18 is received and transmitted.

A wireless transceiving radio frequency module 21 is used for sending a signal of a preset channel to a DMR digital signal processing receiving module 19, sending the signal to an MCU18 for coding to obtain a digital signal, feeding the digital signal back to the DMR digital signal processing receiving module 19, and sending the digital signal. And the voice receiving and converting module 20 is configured to receive the digital signal sent by the DMR digital signal processing and receiving module 19, convert the digital signal into a voice signal, and output the voice signal by the speaker 9. The 4G communication module 14 is communicated with the 4G base station through the 4G communication antenna 4 and is connected with the SIM card base 3; and also to the MCU 18. The MCU18 is also used for receiving information input by the external input keys 5 and displaying the information on the liquid crystal display screen 6; the housing 1, modules and the SIM card holder 3 are all arranged in the housing 1. A volume control key 11 is arranged on the shell 1, and the volume control key 11 is connected with the MCU 18.

The WiFi module 15, the MCU18, the 4G communication module 14, the voice receiving and converting module 20, the DMR digital signal processing and transmitting module 17, the DMR digital signal processing and receiving module 19 and the voice receiving and converting module 20 are all connected with the power management module 13, and the power management module 13 is also connected with the lithium battery 2. The external input keys 5 are all arranged on the shell 1 and comprise a confirmation key, two selection keys, four direction keys, an up-down direction key, a left-right direction key, a dialing key, a hang-up key and 12 number symbol input keys. The power management module 13 is used for converting the external voltage of 3.7V into the voltage of 1.4V required by the digital signal processing unit and the memory unit, and the working voltages of the liquid crystal display screen 6, the 4G communication module 14, the WiFi module 15 and the voice receiving and converting module 20. And a micro control chip is adopted to provide core computing power for the terminal and process information data for the terminal. The external keyboard input module 23 is connected to each key.

The utility model relates to a terminal concrete theory of operation is handed to multimode for emergency communication as follows:

under the talkback mode, the channel information is transmitted to the MCU18 for processing through the adjustment channel knob 12, then the MCU18 controls the DMR digital signal processing and receiving module 19 to receive the signal of the preset channel through the wireless transceiving radio frequency module 21, the received signal is decoded by the DMR digital signal processing and receiving module 19, then the digital signal is converted by the voice receiving and converting module 20, and finally output to the speaker 9, thereby completing the signal receiving and output. Similarly, when sending information, firstly adjusting the channel knob 12 to preset a channel, then pressing the sending key 10 for a long time to send the voice to the MIC voice input conversion module 16 for conversion through the MIC8, then sending the voice to the DMR digital signal processing sending module 17 for coding and encryption, and finally sending out a radio frequency signal through the wireless transceiving radio frequency module 21, and transmitting the radio frequency signal through the wireless transceiving antenna 2.

In the 4G mode, during voice call, the 4G base station is connected through the 4G communication module 14 via the 4G communication antenna 4 by the operator SIM card installed in the SIM card base 3, a channel request is sent to the base station, and then the handset and the base station communicate on an independent dedicated channel. When data is transmitted, the 4G base station is accessed according to the mode, and then the data is successively forwarded to the service gateway and the packet data gateway through the base station, and enters the Internet for further interconnection.

Under the WiFi mode, the MCU18 sends a signal to the WiFi module 15, so that the WiFi module 15 enters a working mode, searches for a connection router via the WiFi antenna 7, and connects to the Internet by setting an IP address and the like for the router. Furthermore, the utility model discloses carry out programming control to MCU, realize the optimal signal distribution, concrete working method is: when MCU detects 4G signal and wiFi signal, whether suggestion user adopts the wiFi mode through liquid crystal display 6, carry out automatic preferential connection when detecting the wiFi address that has configured, realize energy-conserving purpose.

Claims (4)

1. A multimode handheld terminal for emergency communication, comprising:

a WiFi module (15) connected to the router through a WiFi antenna (7); is also used for receiving the information sent by the MCU (18);

the MIC voice input conversion module (16) is connected with the MIC (8) through a transmitting key (10) and is used for receiving a voice signal sent by the MIC (8), converting the voice signal into a digital signal and sending the digital signal;

the DMR digital signal processing and sending module (17) is used for receiving the digital signal sent by the MIC voice input conversion module (16) and sending the digital signal to the MCU (18);

the wireless transceiving radio frequency module (21) is used for sending a signal of a preset channel to the DMR digital signal processing receiving module (19);

the MCU (18) is used for receiving the digital signals sent by the DMR digital signal processing and sending module (17), coding and encrypting the digital signals and feeding the digital signals back to the DMR digital signal processing and sending module (17); the digital signal processing and receiving module is used for receiving the signal of the preset channel sent by the wireless transceiving radio frequency module (21), processing the signal to obtain a digital signal and feeding the digital signal back to the DMR digital signal processing and receiving module (19); the LCD is also used for receiving information input by an external input key (5) and displaying the information on the LCD (6);

the voice receiving and converting module (20) is used for receiving the digital signal sent by the DMR digital signal processing and receiving module (19), converting the digital signal into a voice signal and outputting the voice signal by a loudspeaker (9);

the 4G communication module (14) is communicated with the 4G base station through a 4G communication antenna (4) and is connected with the SIM card base (3); is also connected with the MCU (18);

the SIM card base comprises a shell (1), and each module and the SIM card base (3) are arranged in the shell (1).

2. The multimode handheld terminal for emergency communication according to claim 1, wherein the WiFi module (15), the MCU (18), the 4G communication module (14), the voice receiving and converting module (20), the DMR digital signal processing and transmitting module (17), the DMR digital signal processing and receiving module (19) and the voice receiving and converting module (20) are all connected to a power management module (13), and the power management module (13) is further connected to the lithium battery (2).

3. A multimode hand-held terminal for emergency communication according to claim 1 or 2, characterized in that said external input keys (5) are all arranged on the housing (1) and comprise an enter key, two selection keys, four direction keys, up, down, left and right, a dial key, an on-hook key and a 12 digit symbol input key.

4. Multimode handheld terminal for emergency communication according to claim 1 or 2, characterized in that a volume control key (11) is provided on said housing (1), said volume control key (11) being connected to the MCU (18).

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