RU167665U1 - Radio terminal for use with a smartphone - Google Patents

Abstract

The utility model relates to selective communication devices with two or more subscriber units, in particular to digital radio stations with an open architecture, and can be used as a gadget for a smartphone or other mobile digital device operating in a GSM network based on Android / IOS operating systems. The technical result is the expansion of the arsenal of technical tools that can work with the proposed mobile radio terminal for use with a smartphone. This result is achieved due to the fact that the digital radio connected to the Bluetooth module and built according to the standard scheme, including an electronic antenna switch, transmitting and receiving paths, the first of which contains a series-connected frequency synthesizer, modulator and power amplifier, and the second - in series included low-noise amplifier and quadrature demodulator, the control input of which is connected to the second output of the frequency synthesizer, and the quadrature outputs are connected to the quadrature inputs of the speech code A programmable microprocessor is introduced associated with the headset and the Bluetooth module, the first output of which is connected to the control input of the electronic switch, while the Bluetooth module and the codec are made with additional inputs / outputs, and the frequency synthesizer and modulator with additional inputs, the second and third the outputs of the programmable microprocessor are connected to additional inputs of the frequency synthesizer and modulator, respectively, and the additional inputs / outputs of the Bluetooth module and codec are connected to the corresponding outputs rows / inputs of a programmable microprocessor, and Bluetooth and

Description

Does the present utility model relate to selective communication devices with two or more subscriber installations, in particular to digital radios with an open architecture? and can be used as a gadget for a smartphone or other mobile digital device operating in a GSM network based on Android / IOS operating systems.

Communication systems are known in which, through gateways, communication is provided between open standard radio terminals, for example, TETRA and a telephone network. The method of establishing such a connection is protected by patent EP No. 1220519, H04M 1/2745, H04W 8/26.

US patent No. 5987331, H04Q 7/20 describes a gateway for establishing communication between digital and analogue radio stations, comprising digital and analogue transceivers connected to a controller including a processor, one of the outputs connected to a control input of an electronic key, the signal input of which associated with one of the transceiver devices, and code conversion means. A system using this gateway is designed to interact selectively between different types of communication subscribers, for example, between a radio station and a telephone subscriber, and between the same types of subscribers, for example, between two digital radio stations or between digital and analog radio stations. The disadvantage of these solutions is the low performance of the gateway.

This drawback is eliminated in the patent for utility model RU No. 50738, H04Q 7/20, which proposes a gateway for establishing communication between digital and analogue radio stations, containing digital and analogue radio stations connected to a controller intended for analysis of received information and control and including a processor, one of the outputs connected to the control input of an electronic key, the signal input of which is connected to one of the radio stations, and means for converting codes. The controller is equipped with a second electronic key, the control input of which is connected to the second output of the processor, the signal input is connected to another radio station, and the code conversion means include an encoder, decoder and TDMF decoder, with the encoder input connected to the third processor output and the output connected to the analog a radio station, the outputs of the TDMF decoder and decoder are connected to the first and second inputs of the processor, and the inputs are connected to the first outputs of the first and second electronic keys, the second outputs of which are connected to the corresponding radio stations , the controller and these transceiver radios are equipped with interconnected UART ports.

The disadvantage of the gateway described above is that it does not provide work with open standards for trunking communications and with the GSM standard, which in the last decade have become most widespread in the technology of radio communications and telephony, respectively.

The utility model of Patent RU No. 115596 H04Q 5/00, which describes a mobile universal access terminal - a gateway containing a TETRA standard transceiver, a GSM standard transceiver and a TETRA standard wireless terminal adapter with GSM standard wireless devices, is aimed at eliminating this drawback. Bluetooth protocol. Moreover, the specified adapter is mechanically attached to the TETRA standard transceiver using a connector with a clamp that provides electrical connections between the elements and wirelessly connects a TETRA standard radio station to GSM standard transceivers to ensure communication and reception / transmission of SMS and SDS messages. As a transceiver device of the GSM standard, mobile phones, handheld laptop computers, tablet computers, smartphones and other devices working according to the GSM standard can be used. The specified mobile terminal is selected as the closest analogue of the proposed technical solution.

The presence of a wireless adapter in the mobile terminal described above allows for user communication from one user terminal both according to the TETRA standard and the GSM standard, which is an undoubted advantage of this terminal over the analogues described above. However, at the same time, the user of a mobile GSM device, such as a smartphone, is not able to use a radio station with a trunked communication format other than TETRA. In particular, the open ARSO R25 format, aimed at meeting the needs of state, government and other organizations in operational communications for security purposes, cannot be used. A P25 radio station can operate both in analogue mode for compatibility with existing analogue FM radio stations, and in analogue or digital mode with other P25 radio stations.

The proposed utility model is aimed at eliminating the indicated drawback of the closest analogue.

The expected technical result is to expand the arsenal of technical means that can work with the proposed mobile radio terminal.

The expected technical result is planned to be achieved due to the fact that the digital radio station connected to the Bluetooth module and built according to the standard scheme includes transmitting and receiving paths connected to the antenna using an electronic switch, the first of which contains a frequency synthesizer, a modulator and an amplifier in series power, the output of which is connected to the first contact of the electronic switch, and the second contains a low-noise amplifier connected in series with its input to w one contact of the electronic switch, and a quadrature demodulator, the control input of which is connected to the second output of the frequency synthesizer, and the quadrature outputs are connected to the quadrature inputs of the speech codec associated with the headset and the Bluetooth module, a programmable microprocessor is introduced, the first output of which is connected to the control input of the electronic switch In this case, the Bluetooth module and the codec are made with additional inputs / outputs, and the frequency synthesizer and modulator are with additional inputs, the second and third outputs are ogrammiruemogo microprocessor connected to the aforesaid additional inputs respectively frequency synthesizer and modulator, and additional inputs / outputs Bluetooth module and a codec associated with the corresponding outputs / inputs of a programmable microprocessor, the Bluetooth module and a programmable microprocessor installed in the same housing with the structural elements of the digital transceiver.

In FIG. 1 shows a structural diagram of the claimed radio terminal for use with a smartphone.

In FIG. 2 is a structural diagram of a digital radio station.

In FIG. 3 shows a wiring diagram of an upper side of a multilayer circuit board of a radio terminal.

In FIG. 4 shows a wiring diagram of the lower side of a multilayer board of the claimed radio terminal.

In FIG. 5 shows a block diagram of a coherent algorithm for a radio terminal.

In FIG. 6 shows a block diagram of a connected algorithm for a smartphone.

In FIG. 7 shows a block diagram of a coherent algorithm for transmitting voice messages.

The following notation is used in the figures shown: 1 - digital radio station; 2 - radio communication antenna; 3 - programmable microprocessor; 4 - electronic switch; 5 - output filter; 6 - low noise amplifier; 7 - a quadrature demodulator; 8 - frequency synthesizer; 9 - speech codec; 10 - headset; 11 - Bluetooth module; 12 - modulator; 13 - power amplifier.

The proposed radio terminal for use with a smartphone contains a digital radio station 1, connected to the module 11 Bluetooth and programmable microprocessor 3.

Digital radio station 1 includes a radio communication antenna 2 and transmitting and receiving paths connected to it using an electronic switch 4, the first of which contains a frequency synthesizer, a modulator and a power amplifier connected in series, the output of which is connected to the first contact of the electronic switch 4, and the second contains series-connected low-noise amplifier 6, connected by its input to the second contact of the electronic switch 4, and a quadrature demodulator 7, the control input of which is connected to the second th output of the frequency synthesizer 8, and quadrature outputs - to quadrature inputs speech codec 9, respectively associated with the headset 10 and the module 11 Bluetooth.

The first output of the programmable microprocessor 3 is connected to the control input of the electronic switch 4, the second and third outputs of the programmable microprocessor 3 are connected to additional inputs of the frequency synthesizer 8 and modulator 12, the additional input / output of the speech codec 9 is connected to the corresponding output / input of the programmable microprocessor 3, which also connected to the additional input / output of the 11 Bluetooth module. In this case, the Bluetooth module 11 and the programmable microprocessor 3 are installed in one housing with the above-mentioned structural elements of the digital radio station 1.

All electronic components of the digital radio station 1 and the programmable microprocessor 3, as well as the components of the Bluetooth module 11 that are not related to the smartphone, are mounted on a single multilayer board. On the wiring diagrams of the upper and lower sides of said board, shown respectively in FIG. 3 and 4, the specific names of the purchased electronic components used in the product are indicated.

Features of the construction of the transmitting path are the implementation of the 8-frequency synthesizer in the form of a fractal synthesizer with a PLL based on a tunable voltage-controlled oscillator (Fractonal N PLL VCO), and modulator 12 - in the form of a four-position FM modulator with Gaussian filtering (4-FSK modulator), as well that Bluetooth module 11 is configured to work with smartphones using Android / IOS operating systems.

All electronic components used in the claimed device are available on the industrial electronics market. Thus, the possibility of mass production of the claimed radio terminal is not in doubt.

The considered radio terminal for use with a smartphone works as follows.

The starting point for consideration is the absence of any signals at the input of a digital radio station 1 received by a radio antenna 2 or intended for transmission through this antenna. In this case, the programmable microprocessor 3 does not generate commands for temporarily switching the electronic switch 4 from the “Receive” position to the “Transfer” position. This means that the output of the output filter 5 is connected directly to the input of the low-noise amplifier 6 in the receiving path of the radio station.

If, after the initial moment, the radio communication antenna 2 receives an external radio frequency signal, then this signal passes through the output filter 5 to the input of a low-noise amplifier 6, where this signal is converted to the form perceived by the quadrature demodulator 7.

In turn, the quadrature demodulator 7 by the signals of the frequency synthesizer 8 divides the received signal into in-phase (I) and quadrature (Q) components.

These components are transmitted to the speech codec 9, which transmits the received signals to the programmable microprocessor 3, where the correspondence of the structure of the received signal to the requirements of the signals processed by this radio terminal is checked.

If the structure meets the specified requirements, the programmable microprocessor 3 issues in the speech codec 9 a permission command to generate a signal for transmission to the smartphone.

To the speech codec 9 is connected to a wired headset 10 containing a speaker and a microphone.

If the message received in the speech codec 9 indicates that this message refers to voice signals, but the conditional number of the smartphone is not indicated, then the speech codec 9 through the speaker of the headset 10 reproduces the specified voice message.

If the message indicates that this is a text (or voice) message for a particular smartphone with an indication of its conditional number, then speech codec 9 transmits this message to the Bluetooth module 11, controlled by the signals of the programmable microprocessor 3.

Via the Bluetooth module 11, this message is sent to all smartphones (which can also be other electronic devices with an Android / IOS structure) associated with this radio terminal. But only the smartphone reacts to it, the conditional number of which corresponds to that indicated in the message.

Thus, a text (or voice) message is received on a strictly defined smartphone, and only the smartphone user can see the message.

In the absence of connecting a wired headset 10 and the absence of an indication of the conditional number of the smartphone, a voice message through the Bluetooth module 11 arrives on all smartphones associated with this mobile radio terminal. The conditional number of the smartphone in such a message will be absent.

Depending on the programming of each specific smartphone, a message that is not equipped with a conditional number of the smartphone will either be reported to the user or will be screened out as extraneous.

Let us now consider the operation of the proposed radio terminal when transmitting a message.

Such a transfer is possible when using a wired headset 10 or when using any smartphone connected to a mobile radio terminal via a Bluetooth wireless channel. The only difference is that the wired headset 10 allows you to generate only a voice message, and a smartphone - either a voice or text message. From the corresponding output of the speech codec 9, the message is transmitted to the programmable microprocessor 3, which includes a frequency synthesizer 8 and transmits the message to the modulator 13.

The modulated message signal from the output of the modulator 12 is transmitted to the power amplifier 13 of the digital radio station 1.

In the transmission mode, the programmable microprocessor 3, using the electronic switch 4, temporarily switches the output of the power amplifier 14 to the input of the output filter 5, and a power-amplified message signal through this filter and the radio communication antenna 2 is broadcast.

The transmitted signal is received by a similar radio terminal and is communicated to its user in the above manner.

The joint operation of the mobile radio terminal with the smartphone, to which it is connected wirelessly via Bluetooth, is provided by the communication software algorithms (software) of the mobile radio terminal.

Based on the fact that two devices are involved in the reception and transmission of messages: a mobile radio terminal and a smartphone, the communication algorithms are naturally divided into a transmit-receive algorithm for a mobile radio terminal and a transmit-receive algorithm for a smartphone. Each of these algorithms in the form of special software is recorded respectively in programmable microprocessor 3 and in the smartphone's memory.

The block diagrams of the transmit-receive algorithms for the radio terminal and for the smartphone are shown in FIG. 5 and 6, respectively.

The block diagrams of each of the algorithms are presented in a simplified form, designed to ensure that each user (both on the transmitting and receiving sides) has a single radio terminal equipped with a single smartphone connected to the radio terminal via Bluetooth. For simplicity, the negotiation protection function in the flowcharts of FIG. 5 and 6, is not considered, although the possibility of such protection in the claimed device is provided.

The smartphone, working in conjunction with the radio terminal, becomes, as it were, part of digital radio station 1. For this mode of operation, the current settings of digital radio station 1 are considered to be preset and displayed on the smartphone screen.

At the same time, all the smartphone’s work in transmitting voice data is reduced to solving the issue of the need to send a message via the Bluetooth interface, and if the question of the need to send a message (including voice) is positive, actually forming and transmitting the message via Bluetooth.

To generate a voice message by the user of digital radio station 1, a microphone is used, which is part of the smartphone.

The formation of radio messages is carried out directly in digital radio station 1. In this case, the standard TIA-102 mobile communication methodology is used according to the ARCO R25 standards.

In FIG. 7 shows a block diagram of an algorithm for transmitting voice data, which is an integral part of the special software of the considered radio terminal, without which its normal operation is impossible.

The smartphone temporarily switches to the communication algorithm program either at the user's command (as a rule, for subsequent transmission of the message), or after the corresponding signal is received and received from the radio terminal via the Bluetooth channel if the radio terminal receives a message through the radio channel that requires subsequent notification by the user. After receiving or transmitting a message, the smartphone returns to work under the main program.

Thus, it becomes possible to establish a reliable communication channel between users in any open formats that does not require any intermediaries. Such a connection may be necessary, for example, in the case when users are, on the one hand, seriously ill patients of a medical institution, and on the other hand, medical staff. Accordingly, the expected technical effect is achieved, consisting in expanding the arsenal of technical means that can work with the proposed mobile radio terminal.

Claims (1)

A radio terminal for use with a smartphone, containing a digital radio station connected to the Bluetooth module, including a radio antenna and transmitting and receiving paths connected to it using a controlled electronic switch, the first of which contains a frequency synthesizer connected in series, a modulator and a power amplifier, the output of which is connected to the first contact of the electronic switch, and the second contains a low-noise amplifier connected in series, connected by its input to the second contact of the electronic a ktron switch, and a quadrature demodulator, the control input of which is connected to the second output of the frequency synthesizer, and the quadrature outputs are connected to the quadrature inputs of the speech codec associated with the headset and the Bluetooth module, respectively, characterized in that a programmable microprocessor is inserted into it, the first output of which is connected to the control input of the electronic switch, while the Bluetooth module and the codec are made with additional inputs / outputs, and the frequency synthesizer and modulator with additional inputs, the second and third The programmable microprocessor outputs are connected to the additional inputs of the frequency synthesizer and modulator, respectively, and the additional inputs / outputs of the Bluetooth module and codec are connected to the corresponding outputs / inputs of the programmable microprocessor, the Bluetooth module and the programmable microprocessor installed in the same housing as the aforementioned design elements of a digital radio station.

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