CN217546039U - Multi-standard cluster handset - Google Patents
Multi-standard cluster handset Download PDFInfo
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- CN217546039U CN217546039U CN202221559095.7U CN202221559095U CN217546039U CN 217546039 U CN217546039 U CN 217546039U CN 202221559095 U CN202221559095 U CN 202221559095U CN 217546039 U CN217546039 U CN 217546039U
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Abstract
The utility model discloses a multi-standard cluster hand-held set, which comprises a face shell unit, an interface unit, a main control unit, a rear cover unit and a battery; the main control unit comprises a universal radio frequency unit, a baseband unit, a power supply unit, an audio unit and an interface unit; the handset adopts a universal radio frequency receiver and a universal radio frequency transmitter, so that the receiving and transmitting requirements of UHF, MDT and PDT systems on radio frequency signals are met; the handset is provided with a large-capacity battery and a large-power loudspeaker, the front surface of the handset is distributed with a display screen, a keyboard, the loudspeaker and a microphone, and a plastic structure is injected by a mould; an ARM and DSP two-in-one processor is adopted, the functions of UHF, MDT and PDT terminals are realized by calling a software function module, six working modes of UHF network access, UHF network disconnection, MDT network access, direct connection, PDT network access and direct connection are supported, and cluster command and scheduling services are provided.
Description
Technical Field
The utility model relates to a wireless communication technology field, specifically speaking relates to a handheld machine of army and civilian integration multi-standard cluster.
Background
The construction of special trunking communication equipment in China originated in 1989 and goes through three generations of products. Originally, the cluster products imported from Japan and America are modified, such as early UP450, KG110, 702/7005, GP88, GP300 and the like, so as to meet the urgent demand of daily service communication support.
By the beginning of the 21 st century, the second generation of cluster products UHF mobile communication systems adopting the international communication standard (MPT 1327) were developed by our country. Over ten years, the series of equipment is equipped in large batch, and plays an important role in command, dispatch and communication guarantee of urban police, air force stations, naval bases, large training yards and field maneuvering areas.
With the development of digital communication technology, in 2014 to date, by adopting a special digital trunking standard independently established in China, a latest generation special digital trunking communication system (MDT) has already completed the development and finalization work of various series of products and has obtained good evaluation in multi-task application. The digital cluster system has reliable and safe communication system, special safety system, domestic autonomous voice coding, high-efficiency and energy-saving digital technology, flexible and rapid organization and application capability, can establish exclusive regional communication coverage for troops, and can provide convenient and rapid maneuvering deployment.
In 4 months in 2010, the scientific and technological information bureau of the ministry of public security issues a new generation of digital trunking standard PDT for police in Beijing. The standard is drawn by the technical and information bureau of the ministry of public security, which is supported by the radio administration of the ministry of information industry, and attracts active participation of a plurality of mobile communication manufacturers at home and abroad. At present, more than 330 PDT systems are built in 30 provinces and nearly 290 cities in the whole country, more than 1 ten thousand PDT base stations are provided, and more than 60 ten thousand PDT terminals are provided.
Due to various reasons, the dedicated UHF, MDT and PDT for police use coexist for a long time, and the currently used handheld terminal can only support a partial system, so that a user needs to prepare a plurality of handheld terminals during use, which causes great inconvenience to the user. In order to meet the needs of future communication, a robust trunking communication network guarantee mechanism is established, the wartime communication guarantee capability is improved, and the necessity and the urgency for developing a handset which is compatible with a special UHF, MDT and police PDT trunking communication network are provided.
SUMMERY OF THE UTILITY MODEL
The utility model discloses it is handheld machine of a multi-standard cluster that designs in order to solve above-mentioned problem.
The utility model provides a technical scheme that its technical problem adopted is:
a multi-system cluster handset comprises a face shell unit, an interface unit, a main control unit, a rear cover unit and a battery; the main control unit comprises a universal radio frequency unit, a baseband unit, a power supply unit, an audio unit and an interface unit;
the universal radio frequency unit comprises a radio frequency receiver, a radio frequency transmitter, an antenna switch and a positioning module; the radio frequency receiver is connected with the interface unit through the antenna switch, receives radio frequency signals from the antenna, converts the radio frequency signals into baseband IQ digital signals after filtering, amplifying, down-converting and digitizing and transmits the baseband IQ digital signals to the baseband unit; the frequency band of the radio frequency receiver is 350 MHz-430 MHz, the channel bandwidth is two bandwidth modes of 12.5KHz and 25KHz, and the receiving and processing requirements of UHF, MDT and PDT system frequency bands are met; the radio frequency transmitter is connected with the interface unit through the antenna switch, receives signals modulated by the baseband unit, completes digital frequency modulation and frequency conversion, filtering and amplification processing, and transmits the signals to the antenna through the antenna switch, and the frequency band of the radio frequency transmitter is designed to be 350 MHz-430 MHz, so that the requirements of UHF, MDT and PDT system frequency bands are met;
the baseband unit comprises a baseband processing and control part; the baseband unit adopts an OMAP L138 processor, an ARM926 and DSP C6748 framework, and meets the signal processing requirements of three systems, namely UHF, MDT and PDT; the baseband unit is connected with the audio unit and can perform bidirectional data transmission with the audio unit. ARM completes the functions of user interface GUI, calling of various system protocol software modules, network interface processing and dual-core communication, and DSP completes the functions of calling of various system MAC software modules and radio frequency control.
When the audio unit transmits, the multi-system cluster handset has the functions of MIC signal sampling, filtering, amplifying, noise reduction and echo cancellation; the receiving has the functions of voice signal filtering, voice enhancement, digital-to-analog conversion and audio amplification.
The interface unit of the multi-mode cluster handset comprises a display interface, a keyboard interface, an MIC (microphone) and loudspeaker interface, an antenna interface and a data expansion interface.
According to the multi-system cluster handset, the battery is connected with the host by adopting a 3-core electrode, a charging interface is reserved at the bottom of the battery, a single battery and the whole handset are supported to be charged, the working voltage is 7.2V, the capacity is 3200mAh, and the working temperature is-25-70 ℃.
In the multi-system cluster handset, a face shell unit adopts a plastic structure formed by injection molding of a mold, and a display screen, a keyboard, a loudspeaker and a microphone are distributed on the front face of the face shell unit; the upper left side is provided with a PTT key and a volume adjusting key; the upper right side is a crimping type external multifunctional data interface; the top is a rotary encoder and an antenna interface. Wherein, the display screen is 2.0 cun LCD display screen, and the display effect is good, and loudspeaker are 36mm circular iron basin glued membrane internal magnetic loudspeaker of jumbo size, and the frequency response range is wide, and sound is surreptitious bright, especially adapted handheld end user's operation requirement.
According to the multi-system cluster handset, the back cover unit is of a CNC aluminum alloy frame type structure, the back cover can play a role in fixing and supporting and is also a shielding cover of a radio frequency part of the main control unit, and the back face of the back cover unit is longitudinally arranged into the back clamp and the battery.
According to the multi-system cluster handset, the OMAP L138 processor realizes UHF, MDT and PDT terminal functions in a software loading waveform mode, wherein UHF, MDT and PDT are loadable software modules, and a user selects a working mode through a display interface to call different system software modules to realize the multi-system cluster function.
The working principle is as follows: the multi-mode cluster handset main control unit is divided into the following functional modules: the system comprises a general radio frequency unit (comprising a transmitter, a receiver, an antenna switch and a positioning module), a baseband unit (comprising a baseband processing part and a control part), a power supply unit, an audio unit and an interface unit. The universal radio frequency unit transmitter adopts a universal transmitter design, is compatible to realize UHF, MDT and PDT modulation, and completes direct digital frequency modulation and frequency conversion, filtering and amplification processing. During transmission, UHF, MDT and PDT baseband modulation is completed by the DSP in the baseband unit, and after the DSP completes the baseband modulation, the DSP transmits data to the universal radio frequency transmitter to complete frequency modulation and frequency conversion, thereby realizing the transmission modulation in various modes. The frequency band of the transmitter is designed to be 350 MHz-430 MHz, so that the requirements of UHF, MDT and PDT standard frequency bands are met; the general radio frequency unit receiver completes the processing of amplification, frequency conversion, filtering and the like of the received radio frequency signal. The channel bandwidth of the receiver can be set to be 12.5KHz and 25KHz, and the channel bandwidth requirements of UHF, MDT and PDT are met; the interface between the receiver and the baseband processing unit is a baseband digital IQ signal, when receiving, UHF, MDT and PDT system air interface signals are converted into baseband IQ digital signals after filtering, amplifying, down-converting and digitizing in the receiver, and the baseband IQ digital signals are transmitted to the baseband unit DSP to realize signal processing of different systems; the frequency band of the receiver is designed to be 350 MHz-430 MHz, so that the requirements of UHF, MDT and PDT system frequency bands are met; the audio unit completes MIC signal sampling, filtering, amplifying, noise reducing and echo eliminating functions during transmitting, and completes voice signal filtering, voice enhancing, digital-to-analog conversion and audio amplifying functions during receiving.
The beneficial effects of the utility model are that: a multi-system cluster handset designs a universal radio frequency receiver and a transmitter, and meets the receiving and transmitting requirements of UHF, MDT and PDT systems on radio frequency signals; the handset is provided with a large-capacity battery and a large-power loudspeaker, the front surface of the handset is distributed with a display screen, a keyboard, the loudspeaker and a microphone, and a plastic structure is injected by a mould; the system adopts an ARM and DSP two-in-one processor, realizes UHF, MDT and PDT terminal functions by calling a software function module, supports six working modes of UHF network access, network disconnection, MDT network access, direct connection, PDT network access and direct connection, and can provide cluster command and scheduling services.
Drawings
Fig. 1 is an exploded view of the whole machine of the present invention.
Fig. 2 is a functional block diagram of the main control board of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples.
As shown in fig. 1 and 2, a multi-system cluster handset includes a face case unit 1, an interface unit 2, a main control unit 3, a rear cover unit 4, and a battery 5; the main control unit 3 comprises a universal radio frequency unit, a baseband unit, a power supply unit, an audio unit and an interface unit;
the universal radio frequency unit comprises a radio frequency receiver, a radio frequency transmitter, an antenna switch and a positioning module; the radio frequency receiver is connected with the interface unit through the antenna switch, receives radio frequency signals from the antenna, converts the radio frequency signals into baseband IQ digital signals after filtering, amplifying, down-converting and digitizing and transmits the baseband IQ digital signals to the baseband unit; the frequency band of the radio frequency receiver is 350 MHz-430 MHz, the channel bandwidth is two bandwidth modes of 12.5KHz and 25KHz, and the receiving and processing requirements of UHF, MDT and PDT system frequency bands are met; the radio frequency transmitter is connected with the interface unit through the antenna switch, receives signals modulated by the baseband unit, completes digital frequency modulation and frequency conversion, filtering and amplification processing, and transmits the signals to the antenna through the antenna switch, and the frequency band of the radio frequency transmitter is designed to be 350 MHz-430 MHz, so that the requirements of UHF, MDT and PDT system frequency bands are met;
the baseband unit comprises a baseband processing and control part; the baseband unit adopts an OMAP L138 processor, an ARM926 and DSP C6748 framework, and meets the signal processing requirements of three systems, namely UHF, MDT and PDT; the baseband unit is connected with the audio unit and can perform bidirectional data transmission with the audio unit. The ARM completes functions of user interface GUI, calling of various system protocol software modules, network interface processing and dual-core communication, and the DSP completes functions of calling of various system MAC software modules and radio frequency control.
When the audio unit transmits, the multi-system cluster handset has the functions of MIC signal sampling, filtering, amplifying, noise reduction and echo cancellation; the receiving has functions of voice signal filtering, voice enhancement, digital-to-analog conversion and audio amplification.
In the multi-standard cluster handset, the interface unit 2 includes a display interface, a keyboard interface, a MIC and speaker interface, an antenna interface, and a data expansion interface.
In the multi-system cluster hand-held machine, the battery 5 is connected with the host machine by adopting a 3-core electrode, a charging interface is reserved at the bottom to support single batteries and charging of the whole machine, the working voltage is 7.2V, the capacity is 3200mAh, and the working temperature is-25 ℃ to 70 ℃.
In the multi-system cluster handset, a face shell unit 1 adopts a plastic structure formed by injection molding of a mold, and a display screen, a keyboard, a loudspeaker and a microphone are distributed on the front side; the upper left side is provided with a PTT key and a volume adjusting key; the upper right side is a crimping type external multifunctional data interface (14 core); the top is a rotary encoder and an antenna interface. Wherein, the display screen is 2.0 cun LCD display screen, and the display effect is good, and loudspeaker are 36mm circular iron basin glued membrane internal magnetic loudspeaker of jumbo size, and the frequency response range is wide, and sound is surreptitious bright, especially adapted handheld end user's operation requirement.
According to the multi-system cluster handset, the back cover unit 4 is of a CNC aluminum alloy frame type structure, the back cover can play a role in fixing and supporting and is also a shielding cover of a radio frequency part of the main control unit, and the back face of the back cover unit is longitudinally arranged into the back clamp and the battery.
According to the multi-system cluster handset, the OMAP L138 processor realizes UHF, MDT and PDT terminal functions in a software loading waveform mode, wherein UHF, MDT and PDT are loadable software modules, and a user selects a working mode through a display interface to call different system software modules to realize the multi-system cluster function.
The present invention is not limited to the above-mentioned best mode, and any other products similar or identical to the present invention, which can be obtained by anyone under the teaching of the present invention, all fall within the protection scope of the present invention.
Claims (7)
1. A multi-mode, clustered handset, comprising: the hand-held set comprises a face shell unit (1), an interface unit (2), a main control unit (3), a rear cover unit (4) and a battery (5); the main control unit (3) comprises a universal radio frequency unit, a baseband unit, a power supply unit, an audio unit and an interface unit;
the universal radio frequency unit comprises a radio frequency receiver, a radio frequency transmitter, an antenna switch and a positioning module; the radio frequency receiver is connected with the interface unit through the antenna switch, receives radio frequency signals from the antenna, converts the radio frequency signals into baseband IQ digital signals after filtering, amplifying, down-converting and digitizing and transmits the baseband IQ digital signals to the baseband unit; the frequency band of the radio frequency receiver is 350 MHz-430 MHz, the channel bandwidth is two bandwidth modes of 12.5KHz and 25KHz, and the receiving and processing requirements of UHF, MDT and PDT system frequency bands are met; the radio frequency transmitter is connected with the interface unit through the antenna switch, receives signals modulated by the baseband unit, completes digital frequency modulation and frequency conversion, filtering and amplification processing, and transmits the signals to the antenna through the antenna switch, and the frequency band of the radio frequency transmitter is designed to be 350 MHz-430 MHz, so that the requirements of UHF, MDT and PDT system frequency bands are met;
the baseband unit comprises a baseband processing and control part; the baseband unit adopts an OMAP L138 processor, an ARM926 and DSP C6748 framework, and meets the signal processing requirements of three systems, namely UHF, MDT and PDT; the baseband unit is connected with the audio unit and can perform bidirectional data transmission with the audio unit.
2. A multi-mode cluster handset as claimed in claim 1, wherein: the audio unit has functions of MIC signal sampling, filtering, amplifying, noise reduction and echo cancellation when transmitting; the receiving has the functions of voice signal filtering, voice enhancement, digital-to-analog conversion and audio amplification.
3. A multi-mode cluster handset as claimed in claim 1, wherein: the interface unit (2) comprises a display interface, a keyboard interface, an MIC (microphone) and loudspeaker interface, an antenna interface and a data expansion interface.
4. A multi-mode cluster handset as claimed in claim 1, wherein: the battery (5) is connected with a host by adopting a 3-core electrode, a charging interface is reserved at the bottom to support the charging of a single battery and the whole battery, the working voltage is 7.2V, the capacity is 3200mAh, and the working temperature is-25-70 ℃.
5. A multi-mode cluster handset as claimed in claim 1, wherein: the face shell unit (1) adopts a mold injection molding plastic structure, and a display screen, a keyboard, a loudspeaker and a microphone are distributed on the front side; the upper left side is provided with a PTT key and a volume adjusting key; the upper right side is a crimping type external multifunctional data interface; the top is a rotary encoder and an antenna interface.
6. A multi-mode cluster handset as claimed in claim 1, wherein: the back cover unit (4) adopts a CNC aluminum alloy frame type structure, the back cover can play a role in fixing and supporting and is also a shielding cover of a radio frequency part of the main control unit, and the back surface of the back cover unit is longitudinally arranged into a back clamp and a battery.
7. A multi-mode cluster handset as claimed in claim 1, wherein: the OMAP L138 processor realizes UHF, MDT and PDT terminal functions in a software loading waveform mode, wherein UHF, MDT and PDT are loadable software modules, a user selects a working mode through a display interface, different system software modules are called, and a multi-system cluster function is realized.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221559095.7U CN217546039U (en) | 2022-06-22 | 2022-06-22 | Multi-standard cluster handset |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221559095.7U CN217546039U (en) | 2022-06-22 | 2022-06-22 | Multi-standard cluster handset |
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| CN217546039U true CN217546039U (en) | 2022-10-04 |
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| CN202221559095.7U Active CN217546039U (en) | 2022-06-22 | 2022-06-22 | Multi-standard cluster handset |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116527073A (en) * | 2023-03-17 | 2023-08-01 | 鹤壁市新元电子有限公司 | Ultra-small double-frequency-band handheld radio station |
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2022
- 2022-06-22 CN CN202221559095.7U patent/CN217546039U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116527073A (en) * | 2023-03-17 | 2023-08-01 | 鹤壁市新元电子有限公司 | Ultra-small double-frequency-band handheld radio station |
| CN116527073B (en) * | 2023-03-17 | 2024-04-12 | 鹤壁市新元电子有限公司 | Ultra-small double-frequency-band handheld radio station |
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