CN218387516U - Multifunctional portable emergency broadcast transmitter - Google Patents
Multifunctional portable emergency broadcast transmitter Download PDFInfo
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- CN218387516U CN218387516U CN202122281224.2U CN202122281224U CN218387516U CN 218387516 U CN218387516 U CN 218387516U CN 202122281224 U CN202122281224 U CN 202122281224U CN 218387516 U CN218387516 U CN 218387516U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The application relates to the technical field of broadcast communication, in particular to a multifunctional portable emergency broadcast transmitter, wherein an input modulation module, an FPGA chip electrically connected with the input modulation module, a radio frequency power amplification module and an audio power amplification module which are respectively electrically connected with the FPGA chip are arranged inside the emergency broadcast transmitter; the input modulation module is used for receiving emergency signals sent by an emergency broadcast platform and/or locally; the FPGA chip is used for respectively performing local storage and local monitoring processing, noise reduction processing and recoding and converting into radio frequency signal processing on the input signal; the audio power amplifier module is used for locally broadcasting the input signal sent by the FPGA chip; the radio frequency power amplifier module is used for carrying out power adjustment and carrying out signal transmission to the radio frequency signal that FPGA chip sent, and this application makes the staff bear a transmitter to emergent place alright realize emergency work's processing, the completion of guarantee emergency broadcast task, and also more convenient to carry of staff.
Description
Technical Field
The application relates to the technical field of broadcast communication, in particular to a multifunctional portable emergency broadcast transmitter.
Background
The emergency broadcast is that when major natural disasters, emergency events, public health, social safety and other sudden public crises occur, the emergency broadcast can provide a rapid and quick information transmission channel, and the possible damage caused by the disaster information or the disaster is transmitted to people in the first time, so that people can know what happens in the first time, how to evacuate and avoid risks, and the loss of lives and properties is reduced to the minimum.
The emergency broadcast transmitter belongs to a part of a motor-driven emergency broadcast system, is mainly used for special areas where vehicles and the like are inconvenient to arrive, and is carried to the area by appointed personnel for assembly and broadcasting. The emergency broadcasting system can quickly reach a designated area after a major emergency occurs, guarantee is provided for a mobile emergency broadcasting task, a solution is provided for solving the problem of the last kilometer, and meanwhile, the emergency broadcasting system can also be used as daily promised equipment. Therefore, it is an urgent problem to be solved to enable a worker to conveniently carry a multifunctional broadcast transmitter.
Disclosure of Invention
In order to enable workers to carry a transmitter more conveniently to carry out emergency playing, the application provides a multifunctional portable emergency broadcast transmitter
The application provides a multifunctional portable emergency broadcast transmitter, wherein an input modulation module, an FPGA chip electrically connected with the input modulation module, and a radio frequency power amplification module and an audio power amplification module which are respectively electrically connected with the FPGA chip are arranged inside the emergency broadcast transmitter; the input modulation module is used for receiving an emergency broadcast platform and/or an emergency signal sent locally; the FPGA chip is used for respectively performing local storage and local monitoring processing, noise reduction processing and recoding and converting into radio frequency signal processing on an input signal; the audio power amplifier module is used for locally broadcasting the input signal which is sent by the FPGA chip and subjected to noise reduction processing; the radio frequency power amplifier module is used for adjusting the power of the radio frequency signal which is sent by the FPGA chip and is converted by recoding and transmitting the signal to the outside.
By adopting the technical scheme, the signal sent by the emergency broadcasting platform can be received in the same transmitter, the local signal can also be received, the received signal is divided into three processing modes, the processing of on-site broadcast making, transmitting, sound amplifying and emergency communication contact work can be realized by carrying one transmitter to an emergency site by workers, the completion of emergency broadcasting tasks is guaranteed, and the workers are more convenient to carry.
Furthermore, an audio input interface, a frequency modulation channel interface, a television channel interface, a network channel interface, a 4G circuit interface and a local interface which are connected with the input modulation module (1) are arranged on an upper panel of the emergency broadcast transmitter, the input modulation module is used for receiving an emergency sent by an emergency broadcast platform and/or terminal equipment, and the local interface is used for connecting a microphone or a U disk.
By adopting the technical scheme, the interfaces of a plurality of input channels are integrated on one emergency broadcast transmitter, and the emergency signals input through various channels can be received.
Furthermore, an antenna interface connected with the radio frequency power amplifier module and a horn interface connected with the audio frequency power amplifier module are further arranged on an upper panel of the emergency broadcast transmitter.
Furthermore, the emergency broadcast transmitter further comprises a key board, wherein the key board comprises a power switch, a radio frequency power amplifier switch, an input channel selection key and a knob controller;
the power switch is used for controlling the whole emergency broadcast transmitter to be turned on or off;
the radio frequency power amplifier switch is used for controlling the on or off of the radio frequency power amplifier module;
the input channel selection key is used for selecting a connection interface with the input modulation module;
the knob controller includes first knob, second knob, third knob and fourth knob, first knob is used for adjusting the power amplifier volume of audio power amplifier module, the second knob is used for adjusting the monitoring volume of emergency broadcast transmitter, the third knob is used for adjusting the microphone volume behind the local interface unit access microphone, the fourth knob is used for adjusting the size of incoming signal power.
By adopting the technical scheme, the key board which can enable the working personnel to control the function of the transmitter is arranged on the emergency broadcast transmitter, so that the emergency broadcast transmitter can be started when the emergency broadcast transmitter reaches a specified emergency area for signal receiving, and the machine loss of the emergency broadcast transmitter is reduced; the work of the radio frequency power amplification unit is started when needed, so that unnecessary resource waste is avoided, and meanwhile, the emission of meaningless signals is also avoided; the input channel selection key is used for controlling the identification and processing of the input source by the multi-channel signal input module; the knob can control local volume and monitoring volume and microphone input volume as required, so that the use of workers is more convenient.
Further, the emergency broadcast transmitter further comprises a power supply device, wherein the power supply device comprises a lithium battery, a lithium battery detection board and a power adapter; the lithium battery detection board is used for detecting the electric quantity of the lithium battery; under the condition of mains supply, the power adapter is used for connecting mains supply to charge the lithium battery; and under the condition that the commercial power is not supplied, the lithium battery is used for supplying power to the emergency broadcast transmitter.
By adopting the technical scheme, different environmental conditions can be met by switching between the storage battery and the mains supply power supply mode, and the applicability of the emergency broadcast transmitter is improved.
Further, the emergency broadcast transmitter further comprises a display panel including a signal indicating lamp and a display screen,
the signal indicator lamp comprises a radio frequency power amplifier output indicator lamp, a radio frequency power amplifier overcurrent alarm indicator lamp, a radio frequency power amplifier over-reflection alarm indicator lamp, a modulation degree indicator lamp and a lithium battery electric quantity display indicator lamp, wherein the radio frequency power amplifier output indicator lamp is used for displaying whether the radio frequency signal is transmitted or not;
the display screen can be used for displaying the model name of the equipment, resource codes, current date and time, remote access audio sources and playing states, local operation audio sources and playing states, audio output channels and audio return channels.
By adopting the technical scheme, the staff can visually observe various states of the emergency broadcast transmitter, including the technical discovery that the emergency broadcast transmitter breaks down, whether the emergency broadcast task is executed and the identity information of the emergency broadcast transmitter.
Further, the radio frequency power amplifier module of the radio frequency power amplifier board is further configured to adjust the power of the output signal according to the adjustment of the fourth knob.
By adopting the technical scheme, the output power can be influenced by the size of the emergency signal received by the emergency broadcast transmitter, and the output power of the emergency broadcast transmitter has a fixed requirement, so that the adjusting function of the radio frequency power amplifier module can protect the power amplifier of the emergency broadcast transmitter.
Drawings
The above and other features, advantages and aspects of various embodiments of the present application will become more apparent by referring to the following detailed description when taken in conjunction with the accompanying drawings. In the drawings, like or similar reference characters designate like or similar elements, and wherein:
fig. 1 is a schematic system application diagram of an emergency broadcast transmitter in the embodiment of the present application.
Fig. 2 is a block diagram of an emergency broadcast transmitter in an embodiment of the application.
Description of the reference numerals: 100. an emergency broadcast platform; 200. an emergency broadcast transmitter; 300. an emergency broadcast terminal; 1. an input interface module; 2. an FPGA chip; 3. a radio frequency power amplifier module; 4. an audio power amplifier module; 5. a key sheet; 6. a power supply device; 7. a signal indicator light; 8. a display screen.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
In addition, the term "and/or" herein is only one kind of association relationship describing an associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter associated objects are in an "or" relationship, unless otherwise specified.
The emergency broadcast transmitter belongs to a part of an emergency broadcast system, and as shown in fig. 1, is a system application schematic diagram of the emergency broadcast transmitter 200, the emergency broadcast transmitter 200 is mainly responsible for encapsulating emergency broadcast information or local broadcast requirements sent by an emergency broadcast platform 100 into a transmission coverage instruction and an audio program of a corresponding channel and sending the transmission coverage instruction and the audio program to a target area, activating an emergency broadcast terminal 300 or locally broadcasting the emergency broadcast terminal locally through a loudspeaker, and returning broadcast information and states of the local and emergency broadcast terminals 300 to the emergency broadcast platform 100. After a major emergency occurs, the emergency broadcast transmitter 200 is mainly carried to a special area where vehicles cannot reach through workers, and guarantees are provided for a mobile emergency broadcast task, so that under the condition that the size and the weight of the transmitter are not increased as much as possible, the more functions of the emergency broadcast transmitter 200 can reduce the burden of the workers, and therefore emergency broadcasting can be carried out more timely and rapidly, and the multifunctional emergency broadcast system is provided.
The multifunctional portable emergency broadcast transmitter in the embodiment of the present application is described in further detail below.
In the embodiment of the application, an input interface module 1 and an FPGA chip 2 connected with the input interface module 1, and a radio frequency power amplifier module 3 and an audio frequency power amplifier module 4 respectively connected with the FPGA chip 2 are installed in the emergency broadcast transmitter 200,
the input interface module 1 can receive the emergency broadcast platform 100 and/or the locally transmitted emergency signal; the FPGA chip 2 can respectively perform local storage and local monitoring processing, noise reduction processing and recoding and converting into radio frequency signal processing on the input signal; the audio power amplifier module 4 is used for locally broadcasting the input signal which is sent by the FPGA chip 2 and is subjected to noise reduction processing; the radio frequency power amplifier module 3 is used for adjusting the power of the radio frequency signal which is sent by the FPGA chip 2 and is converted by recoding and transmitting the signal to the outside.
The input interface module 1 can receive the emergency signal and perform preliminary processing on the emergency signal, and the received signal may be an analog signal, so that the FPGA chip 2 can receive and perform other processing functions after the signal format is converted. The signal received by the input interface module 1 may be from an emergency signal transmitted by an emergency broadcast transmitting platform in various forms, or from an emergency signal that a local worker wants to process through the emergency broadcast transmitter 200, so the input interface is connected to the input interface module 1, in this embodiment, the input interface may be disposed on an upper panel of the transmitter, and an audio input interface for receiving line input may be disposed to receive audio signals collected from other audio devices; a frequency modulation channel interface for receiving a frequency modulation input; a television channel interface for receiving DTMB terrestrial input signals, i.e. terrestrial digital television signals from a television tower, and DVB-C cable input signals, i.e. signals from different networks; a network channel interface for receiving IP network port input; a 4G circuit interface for receiving 4G signal inputs and a local break-in interface for receiving microphone and/or usb disk inputs. The signals received by the audio input interface, the fm channel interface, the tv channel interface, the network channel interface, and the 4G circuit interface are all from the emergency broadcast platform 100, and the signals received by the local insertion interface are from signals transmitted by devices locally connected to the emergency broadcast transmitter 200.
Three independent processing circuits are integrated on the FPGA chip 2, and are used for respectively realizing information storage and local monitoring, audio signal processing and local external broadcast broadcasting, and transmitting emergency signals to the emergency broadcast terminal 300 after signal processing and baseband modulation, and the following explains three functions specifically, wherein the first circuit realizes the information storage and monitoring functions, and after receiving the signals transmitted by the input interface module 1, firstly stores the information, and simultaneously locally broadcasts the received emergency signals through a built-in sound box, and can also be monitored by an external earphone; the second path realizes the function of local broadcasting and broadcasting the received audio signals, carries out noise reduction and other processing on the emergency signals after receiving the emergency signals, and then carries out information broadcasting locally through the processing of the audio power amplifier module 4; in the area where the local broadcast cannot be notified, the signal processing and baseband modulation functions can be realized through the third path, the received emergency signal is transmitted to the emergency broadcast terminal 300, and the third path can adjust the power of the radio frequency signal into which the received emergency signal is re-encoded and converted, and transmit the signal to the outside. Wherein, the upper panel of the emergency broadcast transmitter 200 is further provided with an interface connected with the radio frequency power amplifier module 3 and used for connecting an antenna, and the interface and the radio frequency power amplifier module 3 together complete a signal transmitting function; still be provided with the interface that is used for connecting external loudspeaker that audio power amplifier module 4 is connected, with audio power amplifier module 4 accomplishes local broadcast function jointly.
In some embodiments, the emergency broadcast transmitter 200 further includes: the key board 5, the key board 5 is including the switch of the power of the whole machine of control emergency broadcast transmitter 200, the radio frequency power amplifier switch of whether control radio frequency power amplifier module starts, the input channel who is used for selecting input channel selects button and knob controller, wherein, the knob controller is including controlling audio power amplifier module 4 carries out the knob of volume adjustment, the knob of control monitoring volume, the knob of the microphone volume of control through local cut-in input processing module access and the knob that is used for the modulation degree.
The emergency broadcast transmitter 200 is provided with a key board 5 which can enable a worker to control the function of the transmitter, a power switch in the key board 5 controls the whole switch of the emergency broadcast transmitter 200, and the worker can turn on the emergency broadcast transmitter 200 when arriving at a designated emergency area for signal reception, so that the machine loss of the emergency broadcast transmitter 200 is reduced; the radio frequency power amplifier switch can control the radio frequency power amplifier module 3 to transmit signals to the outside, and only when the signals needing to be transmitted to the emergency broadcast terminal 300 are received, the function of the radio frequency power amplifier module 3 is started, so that unnecessary resource waste is avoided, and meanwhile, the emission of meaningless signals is also avoided; the input channel selection key can control the input interface module 1 to select and process the input channel; the knob controller may set a volume knob for controlling local broadcasting, a volume knob for local monitoring, a microphone volume knob for controlling access to the emergency broadcast transmitter 200, and a wave-tuning knob for externally transmitting signals.
In some embodiments, the emergency broadcast transmitter 200 further includes: power supply unit 6, power supply unit 6 is including the lithium cell case, lithium cell detection board and the power adapter who is equipped with the lithium cell, and under the condition that has external commercial power, emergency broadcast transmitter 200 accessible power adapter connects external power supply and provides the power supply and can charge for the lithium cell, and under the condition of not connecting the commercial power, the lithium cell can supply power for emergency broadcast transmitter 200, and the lithium cell detection board is used for detecting lithium cell electric quantity.
Different environmental conditions can be met by switching between the storage battery and the mains supply power supply mode, and the applicability of the emergency broadcast transmitter 200 is improved.
In some embodiments, the emergency broadcast transmitter 200 further includes a display panel, the display panel includes a signal indicator light 7 and a display screen 8, the signal indicator light 7 includes a radio frequency power amplifier output indicator light for displaying whether to perform radio frequency signal transmission, a radio frequency power amplifier overcurrent alarm indicator light, a radio frequency power amplifier excessive reflection alarm indicator light, a modulation degree indicator light, and a lithium battery electric quantity display indicator light; the display screen 8 can be used for displaying the model name of the device, the resource code, the current date and time, the remote access audio source and playing state, the local operation audio source and playing state, the audio output channel and the audio return channel.
In some embodiments, the radio frequency power amplifier module 3 may further adjust the magnitude of the input signal through the control key board 5 to control the output power of the emergency broadcast transmitter 200, protect the radio frequency power amplifier, and display the alarm information on the display screen 8.
Because the size of the emergency signal received by the emergency broadcast transmitter 200 may affect the output power, the fm output power of the emergency broadcast transmitter 200 is generally set to be 10W, and in order to ensure 10W output power when transmitting the received input signal every time, the power amplifier control module may adjust the size of the input signal to control the output power, and simultaneously protect the rf power amplifier module 3, thereby preventing the rf power amplifier from overcurrent or too large reflection.
Fig. 2 is a block diagram of an emergency broadcast transmitter 200 in an embodiment of the application, as shown in fig. 2:
the emergency broadcast transmitter 200 comprises an input interface module 1, an FPGA chip 2, an audio power amplifier module 4, a radio frequency power amplifier module 3, a power supply device 6, a key board 5, a signal indicator light 7 and a display screen 8 which are arranged in the transmitter, wherein the key board 5, the signal indicator light 7 and the display screen 8 are arranged on a front panel of the transmitter, a plurality of input channel interfaces connected with the input interface module 1 are arranged on the upper panel, and the input channel interfaces comprise two line input interfaces, two frequency modulation input interfaces, two network interface interfaces, a connectable IP network management, a connectable IP data and local inter-cut input interface, two interfaces capable of being connected with an external microphone, two U disk interfaces, two television channel receiving interfaces, a connectable with DTMB ground input, a connectable with DVB-C wired input and a 4G special antenna. It should be noted that, a connectable external speaker connected to the audio power amplifier module 4 is further disposed on the upper panel of the emergency broadcast transmitter 200 for local broadcasting of the audio, and when the received audio needs to be broadcasted to the outside, it needs to be confirmed that the external speaker is connected to the audio power amplifier output interface; the upper panel is also provided with a radio frequency power amplifier output interface connected with the radio frequency power amplifier module 3, the connectable antenna is used for transmitting wireless signals to the emergency broadcast terminal 300, and the radio frequency output interface is required to be connected with the antenna to be ensured to be correct when the wireless signals are required to be transmitted to the emergency broadcast terminal 300.
After the emergency broadcast transmitter 200 is in an on state, firstly, parameter setting is carried out on the emergency broadcast transmitter 200 through the key board 5, the display board can display some state information of the transmitter, after the emergency broadcast transmitter 200 is in a normal working state, if input signals are received through an input channel interface, each type of input signals enter the FPGA chip 2 after being processed through a corresponding channel of an input modulation plate, the work of scheduling, controlling, coding, decoding, storing, converting, protocol analyzing and signature delaying is realized, then, a corresponding radio frequency power amplification module 3 and/or an audio power amplification module 4 are carried out, and a worker selects an output channel through the key board 5 and displays working modes, warning information and the like on a display screen 8 or a signal indicator lamp 7 in the display board.
The operation of the emergency broadcast transmitter 200 will be described in detail below.
The portable emergency broadcast transmitter 200 may be included as part of a mobile emergency command system in the event of an emergency, particularly in the event of severe damage to the base station and communication equipment. In the area where the vehicle can not enter, the designated personnel immediately set up the emergency broadcast by bearing the emergency broadcast transmitter 200 to the designated place, besides carrying the emergency broadcast transmitter 200, the working personnel also need to carry the transmitting antenna and the external speaker in coordination, when the emergency broadcast transmitter 200 carries out the external broadcast and carries out the signal transmission to the emergency broadcast terminal 300, the external speaker and the antenna need to be ensured to be connected with the emergency broadcast transmitter 200 without errors,
after the device is started, the display screen 8 enters a standby interface firstly, and after standby is finished, real-time working state display of the device is carried out, wherein the real-time working state display comprises various state information such as the model name of the device, resource codes, the current date and time, remote access audio sources and playing states, local operation audio sources and playing states, audio output channels, audio return channels and the like.
The information display device, namely the display screen 8 in the embodiment of the application, is provided with a starting control, after the starting control is clicked, an operator permission password input or fingerprint verification interface is arranged, after a worker correctly inputs a password or a fingerprint is correctly identified, the operator can enter a setting interface, and a terminal state, setting parameters, regional broadcast and timing broadcast can be set on the setting interface, wherein the parameter setting mode can adopt local case setting, and can also be set in a remote web browser through connecting a network cable.
The front panel modulation degree, the external loudspeaker volume, monitor the volume, can broadcast the accuse setting after adjusting knob such as microphone volume to minimum, if the signal of receiving emergent broadcast platform 100 transmission or the signal of local transmission is waited to accomplish to set up, when receiving the prohibitively emergent command center allotment and control, also can shout locally, predetermine mode broadcast such as MP3 broadcast, available broadcast terminal equipment in the coverage can be through receiving RDS FM instruction, controlled broadcast emergency information. When the sound amplifying broadcasting is required to be started in the process, the volume of the sound amplifying horn is controlled by adjusting a knob which controls the audio power amplifier to adjust the volume on the key board 5; if the 10W radio frequency output needs to be started, the length of the antenna is confirmed according to the frequency modulation output frequency, and then a radio frequency power amplifier switch for controlling the starting of the radio frequency power amplifier module 3 in the key board 5 is pressed, so that the signal can be transmitted to the emergency broadcast terminal 300.
In the working process of the emergency broadcast transmitter 200, the display screen 8 displays the current state information of the transmitter, and the signal indicator lamp 7 displays light according to the working state of the transmitter.
After the emergency broadcast transmitter 200 and the emergency broadcast terminal 300 execute a task once, the execution status information of the emergency broadcast transmitter is transmitted back to the emergency broadcast platform 100, and the emergency broadcast platform 100 determines whether signal transmission needs to be performed again.
The foregoing is only a partial embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations should also be regarded as the protection scope of the present application.
Claims (7)
1. A multi-functional portable emergency broadcast transmitter, characterized by: an input modulation module (1), an FPGA chip (2) electrically connected with the input modulation module (1), and a radio frequency power amplifier module (3) and an audio power amplifier module (4) respectively electrically connected with the FPGA chip (2) are arranged in the emergency broadcast transmitter;
the input modulation module (1) is used for receiving emergency broadcast platform and/or locally transmitted emergency signals; the FPGA chip (2) is used for respectively performing local storage and local monitoring processing, noise reduction processing and recoding and converting into radio frequency signal processing on an input signal; the audio power amplifier module (4) is used for locally broadcasting the input signal which is sent by the FPGA chip (2) and subjected to noise reduction processing; the radio frequency power amplifier module (3) is used for adjusting the power of the radio frequency signal which is sent by the FPGA chip (2) and is converted by recoding and transmitting the signal to the outside.
2. A multi-function portable emergency broadcast transmitter according to claim 1, wherein: the emergency broadcasting transmitter comprises an emergency broadcasting platform and is characterized in that an audio input interface, a frequency modulation channel interface, a television channel interface, a network channel interface, a 4G circuit interface and a local interface which are connected with an input modulation module (1) are arranged on an upper panel of the emergency broadcasting transmitter, the input modulation module is used for receiving an emergency sent by the emergency broadcasting platform and/or a terminal device, and the local interface is used for connecting a microphone or a U disk.
3. A multi-function portable emergency broadcast transmitter according to claim 2, wherein: and an antenna interface connected with the radio frequency power amplification module (3) and a horn interface connected with the audio power amplification module (4) are also arranged on an upper panel of the emergency broadcast transmitter.
4. The multifunctional portable emergency broadcast transmitter of claim 2, wherein; the emergency broadcast transmitter also comprises a key board, wherein the key board comprises a power switch, a radio frequency power amplifier switch, an input channel selection key and a knob controller;
the power switch is used for controlling the whole emergency broadcast transmitter to be turned on or off;
the radio frequency power amplifier switch is used for controlling the on or off of the radio frequency power amplifier module;
the input channel selection key is used for selecting a connection interface with the input modulation module (1);
the knob controller includes first knob, second knob, third knob and fourth knob, first knob is used for adjusting the power amplifier volume of audio power amplifier module, the second knob is used for adjusting the monitoring volume of emergency broadcast transmitter, the third knob is used for adjusting the microphone volume behind local interface unit access microphone, the fourth knob is used for adjusting the size of input signal power.
5. The multifunctional portable emergency broadcast transmitter of claim 1, further comprising a power supply device (6) comprising a lithium battery, a lithium battery detection board, and a power adapter;
the lithium battery detection board is used for detecting the electric quantity of the lithium battery;
under the condition of mains supply, the power adapter is used for connecting mains supply to charge the lithium battery;
and under the condition that the commercial power is not supplied, the lithium battery is used for supplying power to the emergency broadcast transmitter.
6. Multifunctional portable emergency broadcast transmitter according to claim 4 or 5, characterized in that it further comprises a display panel comprising a signal indicator light (7) and a display screen (8),
the signal indicator lamp (7) comprises a radio frequency power amplifier output indicator lamp, a radio frequency power amplifier overcurrent alarm indicator lamp, a radio frequency power amplifier overlarge reflection alarm indicator lamp, a modulation degree indicator lamp and a lithium battery electric quantity display indicator lamp, wherein the radio frequency power amplifier output indicator lamp is used for displaying whether the radio frequency signal is transmitted or not;
the display screen (8) can be used for displaying the model name of the equipment, resource codes, current date and time, a remote access audio source and playing state, a local operation audio source and playing state, an audio output channel and an audio return channel.
7. The multifunctional portable emergency broadcast transmitter of claim 4, wherein the RF power amplifier module is further configured to adjust the power level of the output signal according to the adjustment of the fourth knob.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122281224.2U CN218387516U (en) | 2021-09-18 | 2021-09-18 | Multifunctional portable emergency broadcast transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122281224.2U CN218387516U (en) | 2021-09-18 | 2021-09-18 | Multifunctional portable emergency broadcast transmitter |
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| Publication Number | Publication Date |
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| CN218387516U true CN218387516U (en) | 2023-01-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122281224.2U Active CN218387516U (en) | 2021-09-18 | 2021-09-18 | Multifunctional portable emergency broadcast transmitter |
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| CN (1) | CN218387516U (en) |
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- 2021-09-18 CN CN202122281224.2U patent/CN218387516U/en active Active
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