CN201057670Y

CN201057670Y - Global positioning system microphone for communication system

Info

Publication number: CN201057670Y
Application number: CNU200620118447XU
Authority: CN
Inventors: 刘立平
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-05-12
Filing date: 2003-12-25
Publication date: 2008-05-07
Anticipated expiration: 2013-12-25
Also published as: CA2529902A1; EP1623583A4; AU2003243499A1; MXPA05013494A; WO2004105407A1; EP1623583A1; CA2529902C; CN2798422Y

Abstract

A GPS microphone used for communication system is provided, which is integrated in communication system and comprises a loudspeaker-microphone device, a radio frequency transmitter which builds a transmission network with the communication system by radio frequency signals and a GPS controller. The GPS controller and the radio transmitter are connected electrically and code the positioning data into one or a plurality of radio frequency positioning signals in the form of audio signals. When the GPS controller is triggered, the radio frequency transmitter is started at the same time and sends radio frequency positioning signals to the communication system. The utility model can send out positioning data to a control center in the form of audio signals, which not only can provide communication service, but also provide position fixing service. On the basis of not changing the original radio frequency transmission system of the traditional microphone and communication system, the utility model upgrades the traditional microphone into GPS microphone, therefore reduces the cost of manufacturing the communication system with GPS microphone. The utility model can provide an economic and highly-efficient solution for transmitting positioning data from GPS microphone to communication system by radio frequency. Through the construction of the system, the utility model provides a method for controlling collecting, transmitting and processing GPS information by user.

Description

The global positioning system microphone that is used for communication system

The utility model belongs to application number: 200320129990.6, the applying date: the dividing an application of on December 25th, 2003, invention and created name " the global positioning system microphone that is used for communication system ".

(1) technical field:

The utility model is relevant for a kind of communication system, especially relevant for a kind of global positioning system (GPS) microphone that is used for a kind of communication system, this global positioning system (Global PositioningSystem wherein, be called for short GPS) to be GPS Mike wind energy send locator data in the mode of audio signal to a control centre, thus make this kind GPS microphone not only to support Communications service but also supporting location to determine service.

(2) background technology:

Mobile phone, satellite phone, PDA(Personal Digital Assistant), palmtop computer communication tools such as (Pocket PC) are considered to a kind of public communication tool, and one of them user can realize wireless telecommunications with another user by a public network and communication tool.A traditional communication tool generally includes a microphone loud speaker and a modulator-demodulator that is connected with this microphone loud speaker.When this microphone loud speaker received an audio signal, the modulated demodulator of this audio signal was modulated into a kind of digital signal and is sent out away wirelessly.

In general, two-way radio system is considered to a kind of the most common low side communication tool, it includes a long-distance user, and this long-distance user sends and receive audio transmission by a default transmission channel to another user in a base station scope.This half-duplex that is transmitted as, one of them user presses " conversation " key (Push-To-Talk that is associated with audio frequency, PTT) just can send message, otherwise this radio system just is in a kind of accepting state when talk key is not pressed, can listens to message.Under a lot of situations, the user mainly is to use a kind of portable hand held microphone unit that is equipped with on the wireless device to send and receive transfer voice again by wireless device.This kind microphone also has the talk key of oneself, can control the emission/accepting state of wireless device.

In the above in the situation of Miao Shuing, interface between wireless device and the hand held microphone is comprising a PTT signal from the microphone unit to the radio unit in typical case, microphone audio signal from the microphone unit to the radio unit, loudspeaker signal from the radio unit to the microphone unit, earth-return, and a dc shift voltage from radio unit to microphone unit from microphone unit to radio unit.

In the time of the press-to-talk key, the microphone audio signal of coming from microphone unit is sent to radio unit as baseband signal, carries out signal condition by radio unit, modulation, and emission of radio frequency signals, thus finish transmitting step.When talk key is not pressed, radio unit to the transmission of radiofrequency signal receive, demodulation and conditioning, and send baseband signal as loudspeaker audio signal to microphone.

Now, can be equipped with global positioning system (Global PositioningSystem is called for short GPS) on traditional communication tool, so that user's position is followed the tracks of.Common GPS generally comprises a built-in gps receiver, and this receiver is equipped with a modulator-demodulator, is used for sending out wirelessly from this communication tool a locator data.In order to receive this GPS locator data, communication tool must use a processor unit, and after processor unit received locator data, locator data just can be decoded into a kind of readable data, so that the user can determine sender's position.

But, this communication apparatus that has been equipped with GPS has several shortcomings.At first, this communication apparatus must be equipped with and can but also transmit the modulator-demodulator of locator data with wireless mode not only transmitting audio signal, thereby will increase production cost greatly.In addition, because the data transmission bauds of modulator-demodulator is inconsistent, when transmitting together, audio signal and locator data always occur postponing.

On the other hand, although provide long-distance user's position so that can follow the tracks of to the long-distance user to base station, especially by using GPS (Global Position System) (GPS) to follow the tracks of, be a service item that demand is arranged very much, existing low side radio system can't provide this kind position to determine service.So at present, also must independently GPS be installed so that locator data is provided.

For instance, police officer or security official generally must wear a radio-frequency communication equipment so that keep in touch with control centre in patrol.For the consideration of safety and manpower distribution aspect, its position preferably can be followed the tracks of by control centre, so that in case of emergency control centre can offer help for it.Yet in order to send framing signal to control centre, police officer or security official must carry an other GPS equipment.In other words, this extra equipment has just increased police officer or the load of security official in the time of patrol.

(3) summary of the invention:

Main purpose of the present utility model is to provide a kind of GPS microphone that is used for communication system, wherein this GPS microphone can be sent locator data to control centre in the mode of audio signal, so that this kind GPS microphone can either provide Communications service can provide the position to determine service again.

Another purpose of the present utility model is to provide a kind of GPS microphone that is used for communication system, and wherein locator data transmits by radio frequency, thereby provides a real-time position location with Wireless transmission mode for this communication system.

A purpose more of the present utility model is to provide a kind of GPS microphone that is used for communication system, wherein, can on the basis that does not change conventional microphone and the original radio-frequency (RF) transmission system of traditional communication system, conventional microphone be upgraded to the GPS microphone, thereby reduce to manufacture the cost that this kind has the communication system of GPS microphone.In other words, the utility model does not change under the situation of radio communication infrastructure neither changing radio system itself yet, and the existing low side two-way radio system of can upgrading makes it that obtaining and providing of location data can be provided.What be modified is the not high portable type microphone unit of price.Typical microphone case just has enough spaces to hold the adding of this kind upgrading products.

Another purpose of the present utility model is to provide a kind of GPS microphone that is used for communication system, and it can be for transmitting the solution that locator data provides a kind of economical and efficient by radio frequency from the GPS microphone to communication system.

Another purpose of the present utility model is, in the shell of microphone the interface signal of wireless device to microphone is separated substantially, and at this utility model is added; The utility model includes four basic modules: gps antenna and acceptor unit, a controller unit, a packet modulator-demodulator, and a baseband processing unit.Basically, packet modem data and baseband signal mix, so that make data-message and control messages can use existing radio sound channel open between long-distance user and base station to transmit.Make up by said system, the collection, transmission and the processing that provide a kind of method to control user GPS information also are one of the purpose of this utility model.

Novelty of the present utility model is how it integrates with other wireless device, also comprises how implementing a kind of method, so that can provide above-mentioned position message function by said system.Gps antenna and acceptor unit obtain the GPS positional information and this information are offered controller unit from the external GPS satellite, and controller unit is as " brain " of the present utility model.Controller is monitoring user PTT signal simultaneously, and treated PTT signal is sent to wireless device.Controller also has a machine tool interface, and it can use when the utility model is used for base station.Be used under the situation of base station, machine tool provides polling request or provides configuration variation message remote unit.Controller also is connected with a semiduplex packet modulator-demodulator, sends a digital gps data message (when controller is used by the long-distance user) or a control messages (when controller is used by base station) that needs transmission to it.Conversely, modulator-demodulator is according to the digital data of receiving or gps data message (when controller is used by base station) or control messages (when controller is used by the long-distance user) are reacted and produced, and controller also can be read.The packet modulator-demodulator also is connected with baseband processor.Baseband processor is handled biography basically to wireless device and the microphone audio signal and the loudspeaker audio signal that spread out of from wireless device, and the packet modem signal is mixed and extracts.

The prerequisite of the utility model method is, remote unit can independently obtain and holding position information by GPS, and on the basis of last report time standard in transfer voice into this positional information that comprises with good conditionsi.Base station only just sends a control messages to remote unit when wanting the poll remote unit, the hint remote unit should send a location message as early as possible by current sound channel, is not just having to transmit this location message under the situation of transfer voice separately if needed.Another kind of situation is when base station wishes to change the remote unit current behavior, when increasing the position message frequency such as hope, sends a control messages to remote unit.

Accordingly, in order to achieve the above object, the utility model provides a kind of GPS microphone that is used for communication system, it comprises a loudspeaker-microphone device, a radio frequency sending set that constitutes transmission network by radiofrequency signal and this communication system, and one be electrically connected and locator data can be become with the form coding of audio signal a kind of GPS controller of radio frequency framing signal with this radio frequency sending set, wherein working as the GPS controller is triggered, radio frequency sending set just is activated, to this communication system emission radio frequency framing signal.

In addition, the utility model also provide a kind of from the GPS microphone the method to a communication system transmission locator data, wherein the GPS microphone includes a loudspeaker-microphone device, a radio frequency sending set and a GPS controller, and wherein this method includes following step:

(a) from the radio frequency sending set to the communication system, set up transmission network by radiofrequency signal;

(b) startup GPS controller is encoded into a kind of radio frequency framing signal with the form of audio signal with locator data; And,

(c) start radio frequency sending set the radio frequency framing signal is transmitted to this communication system.

In sum, a kind of global positioning system microphone that is used for communication system of the utility model, it is characterized in that: it includes:

A loudspeaker-microphone device, this loudspeaker-microphone device includes a microphone, a loud speaker and " conversation " (Push-to-talk, PTT) circuit, when thereby this PTT circuit is triggered when starting this microphone and entering transmission state, this microphone can receive voice message and this voice message coding is become a kind of audio signal;

A radio frequency sending set that constitutes transmission network by radiofrequency signal and this communication system; And,

One is electrically connected and locator data is become with the form coding of audio signal a kind of GPS controller of radio frequency framing signal with above-mentioned radio frequency sending set, wherein working as this GPS controller is triggered, this radio frequency sending set just is activated, and launches this radio frequency framing signal to this communication system.

Wherein, when this PTT circuit was triggered, this GPS controller just was activated, and wherein this audio signal of coming out from this loudspeaker-microphone device is combined and be transferred to above-mentioned communication system with this radio frequency framing signal of coming out from this GPS controller.

Wherein, this GPS controller is received above-mentioned locator data by default so that be activated in a predefined time period.

Wherein, when this radio frequency sending set was received a request from this communication system when, this GPS controller was activated.

Wherein, this radio frequency sending set produces the identification signal of an audio signal form in addition at each loudspeaker-microphone device, wherein when this radio frequency framing signal when this radio frequency sending set is launched, this identification signal and this radio frequency framing signal combine and are addressed to this communication system.

Wherein, this radio frequency sending set is a kind of radio transmission facility, can launch and receive above-mentioned radio frequency, and wherein this radio frequency sending set system links as the wireless transmission between this GPS microphone and this communication system.

Wherein, it also includes a portable enclosure and a power supply, and shell is used for holding this radio frequency sending set and this GPS controller, and power supply provides electric energy for this loudspeaker-microphone device, radio frequency sending set and GPS controller.

In sum, the technical solution of the utility model repeats as follows again:

A kind of global positioning system microphone that is used for communication system of the utility model, a kind of global positioning system microphone that is used for communication system, it is characterized in that: it includes:

A loudspeaker-microphone device;

A radio frequency sending set;

A GPS controller, and,

Go up to communication transmission locator data system and device, comprise the transmission network that one first device is set up to communication system by radiofrequency signal from radio frequency sending set for transmission locator data system and device for one; One second device can become the radio frequency framing signal by GPS controller form coding locator data audio signal; Radio frequency sending set is connected to communication system by radiofrequency signal.

Wherein, this transmission locator data system and device comprises that " conversation " circuit is that the PTT circuit connects this loudspeaker-microphone device of startup in succession and starts this GPS controller in succession.

Wherein, this GPS controller presets at starting state for receiving framing signal in the given time.

Wherein, this GPS controller connects this transmission locator data system and device for receiving the startup indication information.

Wherein, it includes for the device that produces the identification signal of an audio signal form at each loudspeaker-microphone device, this radio frequency framing signal is when radio frequency sending set is launched, and this identification signal and this radio frequency framing signal combine and be addressed to this communication system.

Wherein, this transmission locator data system and device connects the device that can decode to the information signal of receiving system.

Wherein, it includes a control centre, device and a processor center of the radio frequency framing signal being changed back again framing signal that control centre includes the device that is used for from GPS microphone receiving information signal, the information signal of receiving system is decoded, receiving system can be a signal receiver, sets up transmission network by radiofrequency signal and GPS microphone.

Wherein, this GPS controller connects other assemblies and system by the management processing position data, it can be that basic 8 8-digit microcontrollers, microcontroller can be that personalized preface realizes or specialized apparatus such as peripheral interface controller (Peripheral Interface Controller to the logic OR combinational logic, PIC) or based on the high-end Reduced Instruction Set Computer (RISC) or the complex instruction set computer (CISC) (CISC) of framework, this loudspeaker-microphone device is hand held microphone unit pattern in addition, possesses " conversation " button or wireless telecommunication system.

Wherein, this global positioning system microphone links by making wireless transmission between this radio frequency sending set and the communication system.

Wherein, this transmission locator data system and device comprises the transmission network of setting up to communication system by radiofrequency signal from radio frequency sending set; Radio frequency framing signal by GPS controller form coding locator data audio signal; And the communication system that connects by radio frequency sending set of radio frequency framing signal, wherein this communication system is preset with an overlay area and a GPS microphone and this communication system transmission network in radio frequency sending set is in this covering area range the time.

A kind of global positioning system microphone that is used for communication system of the utility model, its advantage is: it can send locator data to control centre in the mode of audio signal, can either provide Communications service can provide the position to determine service again.Can on the basis that does not change conventional microphone and the original radio-frequency (RF) transmission system of traditional communication system, conventional microphone be upgraded to the GPS microphone, manufacture the communication system cost that this kind has the GPS microphone thereby reduce.It can be for transmitting the solution that locator data provides a kind of economical and efficient by radio frequency from the GPS microphone to communication system.By the structure of this system, the collection, transmission and the processing that provide a kind of method to control user GPS information.

(4) description of drawings:

Fig. 1 is a calcspar, shows that the utility model is used for a kind of preferred embodiment of the GPS microphone of communication system.

Fig. 2 is a flow chart, is presented in the above-mentioned preferable fact Example of the utility model the transmission course of locator data.

Fig. 3 has shown the another kind of pattern of communication system in the above-mentioned preferred embodiment of the utility model.

Fig. 4 is the signal block diagrams from existing radio equipment to interface the hand-held microphone, demonstrates the GPS microphone and is integrated into wherein.

Fig. 5 is a calcspar, shows that the GPS microphone of the utility model is applied among the typical two-way radio system.

Fig. 6 is a calcspar, has shown each assembly of GPS microphone in the above-mentioned preferred embodiment of the utility model and the interaction between these assemblies.

Fig. 7 has shown that this Real is with the relation between each assembly of GPS microphone in the novel above-mentioned preferred embodiment.

(5) embodiment:

Referring to figs. 1 to Fig. 7, it has shown a kind of preferred embodiment of the utility model " global positioning system (GPS) microphone that is used for communication system ", and GPS microphone wherein of the present utility model can be integrated with this radio system, hand held microphone and the various interface signal of compactness.

The GPS microphone includes the GPS controller 30 that a loudspeaker-microphone device 10, are formed the radio frequency sending set 20 of transmission network and and these radio frequency sending set 20 electrical connections by radio-frequency signal and this communication system and locator data become one or more radio frequency framing signal with the form coding of audio signal, wherein, when GPS controller 30 is triggered, this radio frequency sending set 20 just is activated, to this communication system emission radio frequency framing signal.

The loudspeaker-microphone device 10 that is made into hand held microphone unit pattern includes a microphone 11, a loud speaker 12 and " conversation " (Push-to-talk, PTT) circuit 13, when thereby this PTT circuit 13 is triggered when starting microphone 11 and entering transmission state, microphone 11 can receive voice message and this voice message coding is become a kind of audio signal.

In this preferred embodiment, loudspeaker-microphone device 10 can be that a kind of traditional pinning " conversation " button is conversed, the communication system of wireless type, such as a kind of two-way radio system, wherein when PTT circuit 13 is triggered, microphone 11 is just prepared received audio signal, and radio frequency sending set 20 is just prepared to this communication system audio signals.

The radio frequency sending set 20 of GPS microphone is a kind of radio frequency transmission equipment, can launch and received RF, and wherein radio frequency sending set 20 is to link as the wireless transmission between GPS microphone and the communication system.Accordingly, when this communication system is a two-way radio system, radio frequency sending set 20 can be one from the packet modulator-demodulator of GPS microphone, such as a half-duplex data modem unit to this communication system transmitting audio signal.

Thereby the frequency that is adjusted to a coupling that radio frequency sending set 20 can be automatic or manual realizes communication with another communication system.In other words, manufacturer or security service company can be arranged to use identical radio frequency with a plurality of GPS microphones.On the other hand, the user can manual tuning radio frequency sending set 20 so that set up transmission network with the communication system of wanting to set up transmission network, the user also can seek another communication system by automatic tuning radio frequency sending set 20, so long as within the coverage that will seek communication system.

GPS controller 30 can be managed and when and how handle position data and pass to the another one assembly.Itself and system keep in touch constantly, make decisions, and to various stimulation situations, such as the startup of " conversation " etc., monitor.Because needed processing flux is limited, the utility model is 8 basic 8-digit microcontrollers at this example of enumerating.Basic controller is carried out personalized preface to be realized or specialized equipment such as peripheral interface controller (Peripheral InterfaceController to the logic OR combinational logic, PIC) or based on the high-end Reduced Instruction Set Computer (RISC) and the complex instruction set computer (CISC) (CISC) of framework, can be used for replacing this serial microcontroller.

GPS controller 30 includes a device 31, it is used for receiving locator data from an external position actuator system, actuator system can be the gps satellite of an outside, GPS controller 30 also includes a signal converter 32, it is used for converting locator data to the radio frequency framing signal, and wherein this radio frequency framing signal is transmitted to this communication system by radio frequency sending set 20.

The receiving system 31 of this preferred embodiment is a positional information receiver, and such as a gps antenna, it is used for carrying out wireless telecommunications with gps satellite, so that receive the GPS position data as locator data from gps satellite.Receiving system 31 carry out physical interface layer processing, data are carried out association and are used a kind of specific form and agreement provides data by a component interface.Accordingly, the positional information receiver of receiving system 31 from an external position actuator system receive one or more position signalling, carry out physical interface layer processing, data are carried out association and are used a kind of specific form and agreement provides data by a component interface.In the present embodiment GPS controller 30 employed be American National ocean Institution of Electronics (NMEA-0183) message format.But, also can use other GPS message format, Tian Bao standard interface protocol (TSIP) form that has such as Tian Bao (Trimble) company.In addition, this framework is also supported other navigation system of GPS, such as inertial measurement unit (IMU) etc.

GPS controller 30 also comprises a packet modulator-demodulator, such as a half-duplex data modem unit (two-way radio system does not need the full-duplex data modulator-demodulator), it is obtained locator data and carries out a modulation basic mode so that by signal converter 32 positional information is loaded on the output base-band audio signal in the positional information receiver transmission of location information of receiving system 31.When receiving position information, this assembly carries out demodulation and extracting position data from the input base-band audio signal.Except positional information, the packet modulator-demodulator also delivers control and configuration information.When this pattern, this packet modulator-demodulator also location information is strengthened, so that pass through aerial transmission course holding position information integrity still.In the present embodiment, based on to the taking all factors into consideration of cost, reliability and performance, the utility model has used the FFSK/MSK data modem unit of a kind of 2400bps of support (bits per second) message transmission rate.Also can use data modem unit, also can use other message transmission rate with other modulation basic mode.For device of the present utility model, the message transmission rate that is lower than 2400bps too much might not be too practical, because the discernable disturbing factor duration that TIB tone in band is transferred has substantially exceeded about 300 milliseconds.In order to keep data integrity, present embodiment supports that forward error surveys (FEC), and cyclic redundancy surveys (CRC), and staggered functions such as (Interleaving).

In this preferred embodiment, GPS controller 30 also includes a baseband signal processor, and it is used for the baseband signal of microphone input is mixed with the data modem unit signal, and mixed signal is passed to radio system launches.When receiving operation, baseband signal processor is also given local loud speaker with this signal from the audio baseband signal that radio system obtains receiving, and gives data modem unit simultaneously and handles.Baseband signal processor can carry out filtered voice, has such as function choosing-items such as de-emphasis, pre-emphasis and sound gain controlling, although the processing of these functions and positional information is not closely related.

The GPS microphone also includes a portable enclosure 101 and a power supply 102, shell 101 is used for holding radio frequency sending set 20 and a GPS controller 30, and power supply 102 provides electric energy for loudspeaker-microphone device 10, radio frequency sending set 20 and GPS controller 30.Corresponding, the power supply 102 of GPS microphone includes a rechargeable battery that is placed in the portable enclosure 101, and wherein this rechargeable battery is electrically connected so that electric energy to be provided with loudspeaker-microphone device 10.

What Fig. 5 showed is that the utility model GPS microphone is used to the situation in a kind of typical two-way radio system.At GPS microphone " remote unit " on one side, gps satellite information is received by the gps antenna of a receiving system 31, and gps antenna is the part of the utility model product, is placed within the hand held microphone of loudspeaker-microphone device 10.This satellite information is transferred to remote unit twoway radio place, is transmitted by the radio-frequency antenna on its radio frequency sending set 20 by this wireless device.Base station one side at communication system, radio-frequency antenna on the twoway radio receives instruction, wireless device loads a baseband signal on the signal that loud speaker sends, this baseband signal will reach another hand held microphone place that includes the utility model product.Yet, it should be noted that the utility model product does not need to be placed within the microphone holder of base station unit, it may be more suitable for being placed within the independent shell, because for the formation of a base station, microphone and base station have not been must be together.What will note in addition is exactly that it does not use gps antenna and acceptor unit for base station, and this unit is omissible, it is also noted that base station has a machine tool interface.Machine tool in the communication system is collected the GPS position data that the utility model control of product device is exported, and can show in needs and these data of terminal processes.Can also use machine tool to transmit control message to base station the utility model product on one side, controller is translated this control messages, command packet modulator-demodulator and baseband processor are mixed and are transmitted this message, and this message is loaded into as a baseband signal and is transferred into base station twoway radio place on Mike-audio signal then.The base station wireless device is launched to remote unit by radio frequency.The remote unit twoway radio loads a baseband signal and is sent to the hand held microphone that includes the utility model product on loudspeaker signal.Product of the present utility model extracts this message and it is passed to controller by baseband processor and packet modulator-demodulator.Next controller is translated this message and is acted accordingly.

Fig. 6 has shown the situation of interface between each assembly of the utility model GPS microphone inside and these assemblies.This figure has also shown external interface simultaneously.It should be noted that interface signal all formed to advance/it is right to go out.This is because present wireless device to the interface signal between the handheld microphone has been separated to hold GPS microphone of the present utility model, as shown in Figure 4.

As shown in Figure 2, it is a kind of from the method for GPS microphone to communication system transmission locator data that the utility model also provides, and it includes following step.

(1) sets up transmission network by radiofrequency signal from radio frequency sending set 20 to communication system.

(2) by GPS controller 30 locator data is become the radio frequency framing signal with the form coding of audio signal.

(3) by radio frequency sending set 20 the radio frequency framing signal is transmitted to this communication system.

In step (1), this communication system should provide an overlay area, and in the time of wherein within radio frequency sending set 20 is in this covering area range, the GPS microphone can constitute a transmission network with this communication system.In a single day the transmission contact sets up, and radio frequency sending set 20 not only can send audio signal from loudspeaker-microphone device 10, can also be from GPS controller 30 transmission radio frequency framing signals.In addition, this communication system also should be able to send a GPS configuration to the GPS microphone by radiofrequency signal and obtain order.

Suddenly in (2), when the PTT of loudspeaker-microphone device 10 circuit 13 is triggered, GPS controller 30 just is activated, and wherein the audio signal of coming out from loudspeaker-microphone device 10 is combined and form an information signal and be transmitted to communication system by radio frequency sending set 20 with the radio frequency framing signal of coming out from GPS controller 30.In other words, in case the user triggers PTT circuit 13 and carries out communication with communication system, GPS controller 30 just is activated automatically and receives locator data and locator data is encoded into the radio frequency framing signal so that the information signal that will have radio frequency framing signal and an audio signal by radio frequency sending set 20 is sent.In addition, for the consideration of security purpose, communication system preferably will be noted in the mode of located sites historical record from the information signal that the GPS microphone transmits.

Accordingly, radio frequency sending set 20 produces the identification signal of an audio signal form in addition at this loudspeaker-microphone device 10, wherein when the radio frequency framing signal when radio frequency sending set 20 is launched, identification signal and radio frequency framing signal combine and are addressed to communication system.The main purpose of identification signal is to use at the same time when surpassing one GPS microphone each microphone is discerned.In other words, radio frequency sending set 20 can be to the communication system transmit information signals, and information signal includes audio signal, radio frequency framing signal and identification signal.

In another case, GPS controller 30 can be received locator data so that be activated by default in a predefined time period in step (2).Such as, the user can be preset to GPS controller 30 every 10 minutes reception one-time positioning data, so as long as GPS controller 30 is encoded the radio frequency framing signal, radio frequency sending set 20 is just prepared not to be received even have audio signal from loudspeaker-microphone device 10 to communication system emission radio frequency framing signal.

In addition, when having request to transmit from communication system, GPS controller 30 also can be activated.Accordingly, this request is a radiofrequency signal of sending here from communication system, received by radio frequency sending set 20, wherein this request can start automatically GPS controller 30 position data reception in case to communication system emission radio frequency framing signal as feedback.When the user can not start GPS controller 30, communication system can start GPS controller 30 at a distance, and to follow the tracks of this function of definite position of user very important.In addition, GPS controller 30 also can be started by a mode of simply opening the switch on the GPS controller 30 by the user, such as pressing mode such as start button on the GPS controller 30.

The communication system of this preferred embodiment includes a control centre 40, and control centre 40 includes the device 41 that is used for from GPS microphone receiving information signal, be used for device 42 and a processor center 50 that is used for the radio frequency framing signal is changed back again framing signal that the information signal that receiving system 41 places are transmitted is decoded.Receiving system 41 is a signal receiver, and it has set up transmission network by radiofrequency signal and GPS microphone.

Decoding device 42 is decoding signals, is used for receiving system 41 received information signals are decoded.Accordingly, after the information signal that combines audio signal, radio frequency framing signal and identification signal was received device 41 and receives, decoding device 42 can become readable voice data with audio signal decoding when radio frequency framing signal and identification signal are transmitted to processor center 50.

Accordingly, processor center 50 can convert the radio frequency framing signal to a kind of readable locator data, so that the position of this GPS microphone can be discerned and find according to this readable locator data to communication system by identification signal to each GPS microphone.Be worth should be mentioned that, when being preset at set intervals, the GPS of GPS microphone controller 30 starts once, so at this moment just have only radio frequency framing signal and identification signal to be sent to signal processor 50, and be decoded into readable voice data without any audio signal.

Fig. 1 has shown the example that the GPS microphone uses.The police officer has a GPS microphone in patrol, wherein communication system is installed in the automobile.In case set up transmission network between radio frequency sending set 20 and communication system, the GPS microphone just can be by radio frequency sending set 20 to communication system transmission radio frequency framing signal.Thereby the another one police officer in automobile just can follow the tracks of the police officer position of carrying the GPS microphone.

Fig. 3 has shown another example that the GPS microphone uses, wherein control centre 40 is installed in the automobile and processor center 50 is positioned at the police office, the police officer who carries the GPS microphone can be as using traditional two-way radio system and police officer in the automobile to carry out communication, and the while locator data has been transferred to processor center 50 by control centre 40 from the GPS microphone.In other words, for the GPS microphone, control centre 40 is as its communication center, and wherein control centre can form transmission network to transmit locator data in a bigger coverage areas with processor center 50.

Claims

1. global positioning system microphone that is used for communication system, it is characterized in that: this microphone comprises

Have:

A loudspeaker-microphone device,

A radio frequency sending set;

A GPS controller, and

2. limit is according to the described a kind of global positioning system microphone that is used for communication system of claim 1, it is characterized in that: this transmission locator data system and device comprises that " conversation " circuit is that the PTT circuit connects this loudspeaker-microphone device of startup, starts this GPS controller with being connected.

3. limit is according to the described a kind of global positioning system microphone that is used for communication system of claim 1, and it is characterized in that: this GPS controller connects this transmission locator data system and device.

4. a kind of global positioning system microphone that is used for communication system according to claim 1, it is characterized in that: it includes the identification signal device.

5. a kind of global positioning system microphone that is used for communication system according to claim 1 is characterized in that: this transmission locator data system and device connects the device that can decode to the information signal of receiving system.

6. a kind of global positioning system microphone that is used for communication system according to claim 1 is characterized in that: this global positioning system microphone links by making wireless transmission between this radio frequency sending set and the communication system.