CN216216911U - Support emergent broadcasting equipment of heating protection - Google Patents
Support emergent broadcasting equipment of heating protection Download PDFInfo
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- CN216216911U CN216216911U CN202121490513.7U CN202121490513U CN216216911U CN 216216911 U CN216216911 U CN 216216911U CN 202121490513 U CN202121490513 U CN 202121490513U CN 216216911 U CN216216911 U CN 216216911U
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Abstract
The application discloses an emergency broadcasting device supporting heating protection, which comprises a shell, and an audio amplifier, a broadcasting control circuit, a power module and a temperature control heating circuit which are arranged in the shell; the broadcast control circuit is connected with the audio amplifier and is used for transmitting a broadcast signal to the audio amplifier for playing; the power supply module is in power supply connection with the broadcast control circuit, the audio amplifier and the temperature control heating circuit; the temperature control heating circuit is arranged at one side close to the broadcast control circuit and comprises a temperature control switch and a heating module in control connection with the temperature control switch; the temperature control switch is used for starting the heating module to heat when the detected environment temperature reaches a preset temperature value; this application can heat the inside components and parts of emergent broadcasting equipment through above-mentioned means, makes emergent broadcasting equipment can work at low temperature environment.
Description
Technical Field
The application relates to the field of emergency broadcasting equipment, in particular to emergency broadcasting equipment supporting heating protection.
Background
The emergency broadcasting equipment can receive emergency broadcasting signals sent by a broadcasting control room and play the signals in a mode of audio playing-out equipment and the like, is commonly used for broadcasting and informing emergency events, and therefore is distributed in various regions.
However, the temperature difference between different areas is large, and the temperature difference between day and night is also large in the same area, especially in a low-temperature environment at minus centigrade degree, because the working range of general components in the emergency broadcasting equipment can not reach such low temperature, the components can not work normally, and the emergency broadcasting equipment can not broadcast.
SUMMERY OF THE UTILITY MODEL
The application provides an emergency broadcasting equipment who supports heating protection can heat the inside components and parts of emergency broadcasting equipment, makes emergency broadcasting equipment can carry out work in low temperature environment.
The application discloses an emergency broadcasting device supporting heating protection, which comprises a shell, and an audio amplifier, a broadcasting control circuit, a power module and a temperature control heating circuit which are arranged in the shell;
the broadcast control circuit is connected with the audio amplifier and is used for transmitting a broadcast signal to the audio amplifier for playing;
the power supply module is in power supply connection with the broadcast control circuit, the audio amplifier and the temperature control heating circuit;
the temperature control heating circuit is arranged at one side close to the broadcast control circuit and comprises a temperature control switch and a heating module in control connection with the temperature control switch;
the temperature control switch is used for starting the heating module to heat when the detected environment temperature reaches a preset temperature value.
In one embodiment, the heating module is a PTC heater.
In one embodiment, the broadcast control circuit comprises a circuit board and a processing component arranged on the circuit board;
the temperature control heating circuit is arranged on the circuit board and is close to one side of the processing component.
In one embodiment, the temperature controlled heating circuit further comprises a surge protection module;
the surge protection module is connected with the power module in parallel and is arranged between the power module and the temperature control switch.
In one embodiment, the surge protection module is provided with a voltage dependent resistor.
In one embodiment, the broadcast control circuit comprises a master control module, a digital broadcast signal receiving module and a signal amplifying module;
the digital broadcast signal receiving module is used for receiving digital broadcast signals;
the master control module is connected with the digital broadcast signal receiving module and the signal amplification module and is used for processing the digital broadcast signals and transmitting the processed digital broadcast signals to the signal amplification module for amplification;
the signal amplification module is connected with the audio external amplifier and used for transmitting the digital broadcast signals processed by the master control module to the audio external amplifier for playing after amplification processing.
In one embodiment, the broadcast control circuit further comprises a broadcast signal selection module, an analog broadcast signal receiving module, and a mobile network signal receiving module;
the input end of the broadcast signal selection module is connected with the master control module, the analog broadcast signal receiving module and the mobile network signal receiving module;
the output end of the broadcast signal selection module is connected with the signal amplification module and used for selecting one of the digital broadcast signal, the analog broadcast signal or the mobile network signal processed by the master control module to be transmitted to the signal amplification module for amplification.
In one embodiment, the broadcast control circuitry further comprises a storage module;
the storage module is connected with the master control module, and the master control module processes and converts the digital broadcast signals into digital broadcast data and transmits the digital broadcast data to the storage module for storage.
In one embodiment, the broadcast control circuit further comprises an instruction control module;
the selection input end of the broadcast signal selection module is connected with the master control module;
the instruction control module is connected with the master control module and used for transmitting a signal selection instruction to the master control module, and the master control module receives the signal selection instruction and controls the broadcast signal selection module to select signals.
In one embodiment, the analog broadcast signal receiving module is an FM broadcast signal receiving module;
the analog broadcast signal receiving module is provided with a plurality of analog broadcast signal receiving modules which are different in frequency band.
By last knowing, among the emergency broadcasting equipment of a support heating protection of this application, through at the inside control by temperature change heating circuit that sets up of emergency broadcasting equipment, automatic start heating module heats when temperature detect switch detects ambient temperature and reaches preset temperature value promptly, through the heat-conduction of the inside air of emergency broadcasting equipment, the inside temperature of emergency broadcasting equipment risees and keeps invariable, makes electrical components can be in normal operating temperature within range, consequently makes emergency broadcasting equipment can normally work in low temperature environment.
Drawings
Fig. 1 is a schematic structural diagram of an emergency broadcasting device supporting heating protection according to an embodiment of the present application;
fig. 2 is a schematic connection diagram of a temperature-controlled heating circuit and a power module provided in an embodiment of the present application;
fig. 3 is a hardware schematic diagram of a broadcast control circuit according to an embodiment of the present disclosure.
Detailed Description
The following detailed description of the preferred embodiments of the present application, taken in conjunction with the accompanying drawings, will make the advantages and features of the present application more readily appreciated by those skilled in the art, and thus will more clearly define the scope of the invention.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
The application discloses support emergency broadcasting equipment of heating protection, including casing 1 to and locate audio frequency play ware 2, broadcast control circuit 3, power module 4 and control by temperature change heating circuit 5 in casing 1. The broadcast control circuit 3 is connected to the audio player 2, and is configured to transmit the broadcast signal to the audio player 2 for playing. The power module 4 is in power supply connection with the broadcast control circuit 3, the audio amplifier 2 and the temperature control heating circuit 5. The temperature-controlled heating circuit 5 is arranged on one side close to the broadcast control circuit 3 and comprises a temperature-controlled switch 51 and a heating module 52 in control connection with the temperature-controlled switch 51. The temperature control switch 51 is used for starting the heating module 52 to heat when the detected ambient temperature reaches a preset temperature value.
Specifically, the inside of the housing 1 is a closed space, which is beneficial to heat conduction through air in the housing 1 when the heating module 52 heats, and can prevent heat dissipation. The audio player 2 may be a broadcast speaker or other external device to provide sufficient volume to play the broadcast content contained in the broadcast signal. The power module 4 may be ac or dc, and the power module 4 is only a power supply mode, so the embodiment of the present application does not limit the type of the power module 4 specifically used. The broadcasting control circuit 3 is internally provided with electrical elements, and the temperature control heating circuit 5 mainly protects the electrical elements in the broadcasting control circuit 3 because the temperature range of normal operation is small.
When the temperature control switch 51 detects that the ambient temperature is lower than the preset temperature value, the heating module 52 is started to heat, and the lowest temperature of normal operation of most of the electrical components is about 0 ℃, so the preset temperature value in the embodiment of the present application may be 0 ℃, and the heating module 52 conducts heat through the air in the housing 1, so that the temperature in the housing 1 is raised and is in a constant temperature state, and the electrical components can operate within the temperature range of normal operation. In order to prevent the ambient temperature from fluctuating around 0 degree, the temperature controlled switch 51 with a time-delay opening characteristic is selected in the embodiment of the application, that is, after the temperature controlled switch 51 is closed, the temperature controlled switch is opened when the temperature rises to around 10 degrees, and then the heating module 52 is closed, so as to reduce the power consumption.
In one embodiment, the heating module 52 is a PTC heater. The PTC heater has the advantages of small thermal resistance and high heat exchange efficiency compared with an electric heating wire, can automatically enter a constant temperature state when the temperature reaches the upper limit of the temperature, cannot burn out surrounding electrical elements due to continuous temperature rise caused by continuous heating, and can reach the upper limit of the temperature of 95 ℃ because the highest temperature of normal work of most electrical elements is about 95 ℃.
In one embodiment, the broadcast control circuit 3 includes a circuit board 31 and a processing component 32 disposed on the circuit board 31. The temperature-controlled heating circuit 5 is provided on the circuit board 31 and near one side of the processing component 32. Since the heating module 52 is thermally conducted by the air in the housing 1, the heating effect is gradually reduced as the spatial distance increases. Because the temperature control heating circuit 5 is close to one side of the processing component 32, the processing component 32 of the broadcast control circuit 3 can be better heated, and the processing component 32 can work within the normal working temperature range.
In an embodiment, the temperature controlled heating circuit 5 further comprises a surge protection module 53. The surge protection module 53 is connected in parallel with the power module 4 and is provided between the power module 4 and the temperature controlled switch 51. The surge protection module 53 can prevent the external interference from suddenly generating peak current or voltage to damage other equipment in the loop, particularly in thunderstorm weather, which often causes a surge phenomenon, and the surge protection module 53 can conduct and shunt in a very short time, thereby avoiding surge. Specifically, the surge protection module 53 may be a surge protection module 53 that is commonly used in the field, such as a lightning rod, and therefore, the embodiment of the present application does not limit the type of the surge protection module 53 that is specifically used.
In one embodiment, surge protection module 53 is provided with a varistor. Specifically, when there is thunderstorm weather, there is the appearance of surge often, leads to operating voltage's rising in the twinkling of an eye, and according to piezo-resistor's theory of operation, because the voltage at piezo-resistor both ends risees, the electric current that flows to piezo-resistor also risees, under the effect of reposition of redundant personnel, and the electric current that flows to other circuits reduces relatively, has avoided burning out of circuit.
In one embodiment, the broadcast control circuit 3 includes a general control module 301, a digital broadcast signal receiving module 302, and a signal amplifying module 303. The digital broadcast signal receiving module 302 is used for receiving digital broadcast signals. The general control module 301 is connected to the digital broadcast signal receiving module 302 and the signal amplifying module 303, and is configured to process the digital broadcast signal and transmit the processed digital broadcast signal to the signal amplifying module 303 for amplification. The signal amplification module 303 is connected to the audio external device 2, and is configured to amplify the digital broadcast signal processed by the main control module 301 and transmit the amplified digital broadcast signal to the audio external device 2 for playing.
Specifically, the total control module 301 may be a microprocessor, and specifically may be a GX3201H chip, the digital broadcast signal receiving module 302 includes a DTMB module 3021, an MXL608 module 3022, and an AVL6381 module 3023, the DTMB module 3021 is configured to capture a digital broadcast signal, the MXL608 module 3022 and the AVL6381 module 3023 optimize and demodulate the digital broadcast signal and transmit the digital broadcast signal to the total control module 301, the total control module 301 processes the digital broadcast signal into an audio signal that can be played by the audio amplifier 2, the signal amplifying module 303 includes an SGM8905 module 3031 and a TPA3220 module 3032, the SGM8905 module 3031 is configured to process and amplify the audio signal, and the TPA3220 module 3032 is a power amplifier module.
By arranging the broadcast signal receiving module 302, the digital broadcast signal sent from the broadcast control room can be received, and is transmitted to the audio external amplifier 2 after being processed by the master control module 301 and the signal amplifying module 303, so that the wireless signal transmission of emergency broadcast equipment is realized.
In an embodiment, the broadcast control circuit 3 further includes a broadcast signal selection module 304, an analog broadcast signal receiving module 305, and a mobile network signal receiving module 306. The input end of the broadcast signal selection module 304 is connected with the general control module 301, the analog broadcast signal receiving module 305, and the mobile network signal receiving module 306. The output end of the broadcast signal selection module 304 is connected to the signal amplification module 303, and is configured to select one of the digital broadcast signal, the analog broadcast signal, or the mobile network signal processed by the main control module 301, and transmit the selected one to the signal amplification module 303 for amplification.
Specifically, the broadcast signal selection module 304 may be a 74HC4052 chip, which may select and output signals at the input end according to control of the selection input end, so that the broadcast control circuit 3 can compatibly receive multiple types of signals, the mobile network signal receiving module 306 may be a 4G module for receiving 4G mobile network signals, the analog broadcast signal receiving module 305 is an FM broadcast signal receiving module, the analog broadcast signal receiving module 305 is provided with a plurality of and different frequency bands for receiving FM broadcast signals at different frequency bands, and the analog broadcast signal receiving module 305 is specifically an RDA5807 module.
In an embodiment, the broadcast control circuitry further comprises a storage module 307. The storage module 307 is connected to the main control module 301, and the main control module 301 processes the digital broadcast signal and converts the digital broadcast signal into digital broadcast data, and transmits the digital broadcast data to the storage module 307 for storage. Specifically, the storage module 307 may be a FLASH chip or a DDR3 chip.
In one embodiment, the broadcast control circuitry further includes an instruction control module 308. The selection input end of the broadcast signal selection module 304 is connected with the general control module 301. The instruction control module 308 is connected to the main control module 301, and is configured to transmit a signal selection instruction to the main control module 301, and the main control module 301 receives the signal selection instruction to control the broadcast signal selection module 304 to select a signal. Specifically, the command control module 308 may be a mobile terminal device, and transmits a signal selection command to the main control module 301 through a UART, so as to realize selection control of multiple broadcast signals.
It can be understood that the GX3201H chip, the 74HC4052 chip, the DTMB module 3021, the MXL608 module 3022, the AVL6381 module 3023, the SGM8905 module 3031, the TPA3220 module 3032, the 4G module, the RDA5807 module, the FLASH chip, and the DDR3 chip may all adopt electrical components that are common in the art according to practical situations, and the embodiment of the present application does not limit the type of electrical components that are specifically adopted.
By last can know, among the emergency broadcasting equipment of a support heating protection of this application, through at the inside temperature control heating circuit 5 that sets up of emergency broadcasting equipment, temperature detect switch 51 detects when ambient temperature reaches preset temperature value automatic start heating module 52 heats promptly, through the heat-conduction of the inside air of emergency broadcasting equipment, the inside temperature of emergency broadcasting equipment risees and keeps invariable, makes electrical components can be in normal operating temperature scope, consequently makes emergency broadcasting equipment can normally work in low temperature environment.
The embodiments of the present application have been described in detail with reference to the drawings, but the present application is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present application within the knowledge of those skilled in the art.
Claims (10)
1. An emergency broadcasting device supporting heating protection is characterized by comprising a shell, an audio amplifier, a broadcasting control circuit, a power module and a temperature control heating circuit, wherein the audio amplifier, the broadcasting control circuit, the power module and the temperature control heating circuit are arranged in the shell;
the broadcast control circuit is connected with the audio amplifier and is used for transmitting a broadcast signal to the audio amplifier for playing;
the power supply module is in power supply connection with the broadcast control circuit, the audio amplifier and the temperature control heating circuit;
the temperature control heating circuit is arranged at one side close to the broadcast control circuit and comprises a temperature control switch and a heating module in control connection with the temperature control switch;
the temperature control switch is used for starting the heating module to heat when the detected environment temperature reaches a preset temperature value.
2. An emergency broadcasting apparatus supporting heating protection as claimed in claim 1, wherein the heating module is a PTC heater.
3. The emergency broadcasting equipment supporting heating protection as claimed in claim 1, wherein the broadcasting control circuit comprises a circuit board and a processing component arranged on the circuit board;
the temperature control heating circuit is arranged on the circuit board and is close to one side of the processing component.
4. The emergency broadcasting equipment supporting heating protection as claimed in claim 1, wherein the temperature controlled heating circuit further comprises a surge protection module;
the surge protection module is connected with the power module in parallel and is arranged between the power module and the temperature control switch.
5. The emergency broadcasting device supporting heating protection as claimed in claim 4, wherein the surge protection module is provided with a varistor.
6. The emergency broadcasting equipment supporting heating protection as claimed in claim 1, wherein the broadcasting control circuit includes a general control module, a digital broadcasting signal receiving module and a signal amplifying module;
the digital broadcast signal receiving module is used for receiving digital broadcast signals;
the master control module is connected with the digital broadcast signal receiving module and the signal amplification module and is used for processing the digital broadcast signals and transmitting the processed digital broadcast signals to the signal amplification module for amplification;
the signal amplification module is connected with the audio external amplifier and used for transmitting the digital broadcast signals processed by the master control module to the audio external amplifier for playing after amplification processing.
7. The emergency broadcasting equipment supporting heating protection as claimed in claim 6, wherein the broadcasting control circuit further comprises a broadcasting signal selecting module, an analog broadcasting signal receiving module, a mobile network signal receiving module;
the input end of the broadcast signal selection module is connected with the master control module, the analog broadcast signal receiving module and the mobile network signal receiving module;
the output end of the broadcast signal selection module is connected with the signal amplification module and used for selecting one of the digital broadcast signal, the analog broadcast signal or the mobile network signal processed by the master control module to be transmitted to the signal amplification module for amplification.
8. The emergency broadcast device supporting heating protection of claim 6, wherein the broadcast control circuit further comprises a memory module;
the storage module is connected with the master control module, and the master control module processes and converts the digital broadcast signals into digital broadcast data and transmits the digital broadcast data to the storage module for storage.
9. The emergency broadcast device supporting heating protection of claim 7, wherein the broadcast control circuit further comprises an instruction control module;
the selection input end of the broadcast signal selection module is connected with the master control module;
the instruction control module is connected with the master control module and used for transmitting a signal selection instruction to the master control module, and the master control module receives the signal selection instruction and controls the broadcast signal selection module to select signals.
10. The emergency broadcasting apparatus supporting heating protection as claimed in claim 7, wherein the analog broadcasting signal receiving module is an FM broadcasting signal receiving module;
the analog broadcast signal receiving module is provided with a plurality of analog broadcast signal receiving modules which are different in frequency band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121490513.7U CN216216911U (en) | 2021-06-30 | 2021-06-30 | Support emergent broadcasting equipment of heating protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121490513.7U CN216216911U (en) | 2021-06-30 | 2021-06-30 | Support emergent broadcasting equipment of heating protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216216911U true CN216216911U (en) | 2022-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121490513.7U Active CN216216911U (en) | 2021-06-30 | 2021-06-30 | Support emergent broadcasting equipment of heating protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216216911U (en) |
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2021
- 2021-06-30 CN CN202121490513.7U patent/CN216216911U/en active Active
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