CN112953591A - Intercom - Google Patents
Intercom Download PDFInfo
- Publication number
- CN112953591A CN112953591A CN202110297993.3A CN202110297993A CN112953591A CN 112953591 A CN112953591 A CN 112953591A CN 202110297993 A CN202110297993 A CN 202110297993A CN 112953591 A CN112953591 A CN 112953591A
- Authority
- CN
- China
- Prior art keywords
- module
- unit
- signal
- signal processing
- intermediate frequency
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001914 filtration Methods 0.000 claims abstract description 121
- 238000012545 processing Methods 0.000 claims abstract description 85
- 238000006243 chemical reaction Methods 0.000 claims description 19
- 230000005236 sound signal Effects 0.000 claims description 13
- 230000010355 oscillation Effects 0.000 claims description 12
- 230000003321 amplification Effects 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 7
- 238000004458 analytical method Methods 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01W—METEOROLOGY
- G01W1/00—Meteorology
- G01W1/10—Devices for predicting weather conditions
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Environmental Sciences (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The disclosure relates to an interphone, and relates to the technical field of electronics. This intercom includes: the device comprises a first antenna module, a frequency mixing module, a first intermediate frequency filtering module, a control module and an image signal processing module; the frequency mixing module is used for mixing the satellite cloud picture signals received by the first antenna module to obtain first signals after frequency mixing; the first intermediate frequency filtering module is used for filtering the first signal after frequency mixing output by the frequency mixing module under the control of the control module to obtain a satellite cloud picture signal; the image signal processing module is used for carrying out image signal processing on the satellite cloud picture signal output by the first intermediate frequency filtering module to obtain a satellite cloud picture; the signal bandwidth of the first intermediate frequency filtering module is the channel bandwidth of the satellite cloud picture signal. The method and the device are used for solving the problem that the satellite cloud picture display effect is poor due to the fact that the interphone cannot receive complete satellite cloud picture signals.
Description
Technical Field
The present disclosure relates to the field of electronic technology, and in particular, to an intercom.
Background
The satellite cloud picture is an image of cloud cover and ground surface features on the earth observed from top to bottom by a meteorological satellite. The satellite cloud pictures can be used for identifying different weather systems, determining the positions of the weather systems, estimating the strength and the development trend of the weather systems and providing a basis for weather analysis. At present, outdoor activities such as exploration and mountain climbing need to acquire satellite cloud pictures in time so as to judge weather conditions and ensure the safety of the outdoor activities. The interphone is a two-way mobile communication tool, does not generate telephone charge, and is suitable for occasions with relatively fixed and frequent calls.
Disclosure of Invention
The inventor finds that the working frequency band of the interphone is close to that of the satellite cloud picture, the working frequency band of the interphone is generally 136-147MHz, the central frequency point of the satellite cloud picture is generally between 137MHz and 139MHz, such as 137.7MHz, and the interphone can be used for receiving the satellite cloud picture signals.
However, the channel bandwidth of the existing interphone is usually 6.25kHz, 12.5kHz, 20kHz or 25kHz, while the channel bandwidth of part of the satellite cloud image signal is about 180kHz, and the channel bandwidth of the existing interphone is smaller than the channel bandwidth of the satellite cloud image signal, so that the receiving effect is poor, part of the satellite cloud image signal is lost, the satellite cloud image display effect is poor, and the complete satellite cloud image cannot be accurately displayed.
The invention provides an interphone, which is used for solving the problem that the satellite cloud picture display effect is poor due to the fact that the interphone cannot receive complete satellite cloud picture signals.
The embodiment of the present disclosure provides an intercom, include: the device comprises a first antenna module, a frequency mixing module, a first intermediate frequency filtering module, a control module and an image signal processing module;
the first antenna module is connected with a first connecting end of the frequency mixing module, a second connecting end of the frequency mixing module is connected with an input end of the first intermediate-frequency filtering module, an output end of the first intermediate-frequency filtering module is connected with an input end of the image signal processing module, and a control end of the control module is connected with a controlled end of the first intermediate-frequency filtering module;
the frequency mixing module is used for mixing the satellite cloud image signals received by the first antenna module to obtain first signals after frequency mixing;
the first intermediate frequency filtering module is used for filtering the first signal after frequency mixing output by the frequency mixing module under the control of the control module to obtain a satellite cloud picture signal;
the image signal processing module is used for processing the satellite cloud picture signal output by the first intermediate frequency filtering module to obtain a satellite cloud picture;
and the signal bandwidth of the first intermediate frequency filtering module is the channel bandwidth of the satellite cloud picture signal.
Optionally, the interphone further includes a second antenna module, a second intermediate frequency filtering module, and an audio signal processing module;
the second antenna module is connected with the first connecting end of the frequency mixing module, the second connecting end of the frequency mixing module is connected with the input end of the second intermediate frequency filtering module, the output end of the second intermediate frequency filtering module is connected with the input end of the audio signal processing module, and the control end of the control module is connected with the controlled end of the second intermediate frequency filtering module;
the frequency mixing module is further used for mixing the interphone signal received by the second antenna module to obtain a second signal after frequency mixing;
the second intermediate frequency filtering module is used for filtering a second signal after frequency mixing output by the frequency mixing module under the control of the control module to obtain an interphone signal;
the audio signal processing module is used for processing the audio signal of the interphone signal output by the second intermediate frequency filtering module to obtain a target audio;
and the signal bandwidth of the second intermediate frequency filtering module is the channel bandwidth of the interphone signal.
Optionally, the control module is configured to control the first intermediate frequency filtering module and the second intermediate frequency filtering module to start.
Optionally, the image signal processing module includes an amplifying unit, an analog-to-digital conversion unit, a digital signal processing unit, and a display unit;
the amplifying unit, the analog-to-digital conversion unit, the digital signal processing unit and the display unit are sequentially connected; the input end of the amplifying unit is connected with the input end of the image signal processing module;
the amplifying unit is used for amplifying the satellite cloud picture signal output by the first intermediate frequency filtering module to obtain an amplified signal;
the analog-to-digital conversion unit is used for performing analog-to-digital conversion on the amplified signal output by the amplification unit to obtain a digital signal;
the digital signal processing unit is used for sequentially coding, checking and correcting the digital signals output by the analog-to-digital conversion unit to obtain the satellite cloud picture;
the display unit is used for displaying the satellite cloud picture output by the digital signal processing unit.
Optionally, the digital signal processing unit includes a signal strength comparison subunit, a first decision subunit, and a second decision subunit;
the input end of the signal intensity comparison subunit is connected with the input end of the digital signal processing unit; a first output end of the signal strength comparison subunit is connected to an input end of the first decision subunit, and a second output end of the signal strength comparison subunit is connected to an input end of the second decision subunit; the output end of the first judgment subunit is connected with the output end of the digital signal processing unit, and the output end of the second judgment subunit is connected with the output end of the digital signal processing unit;
the signal intensity comparison subunit is used for comparing whether the signal intensity of the digital signal output by the analog-to-digital conversion unit is greater than a first preset signal intensity;
the first decision subunit is configured to generate a first prompt message when the signal strength of the digital signal is greater than the first preset signal strength, where the first prompt message is used to prompt a user that the direction of the first antenna module is correct;
the second decision subunit is configured to generate second prompt information when the signal strength of the digital signal is not greater than the first preset signal strength, where the second prompt information is used to prompt a user to check whether the first antenna module is connected and whether the direction of the first antenna module is correct.
Optionally, the image signal processing module further comprises a bluetooth unit;
the output end of the digital signal processing unit is connected with the input end of the Bluetooth unit;
the Bluetooth unit is used for sending the satellite cloud picture output by the digital signal processing unit to a Bluetooth module of target equipment.
Optionally, the first antenna module is connected to the first connection end of the frequency mixing module, specifically: the first antenna module is detachably connected with the first connecting end of the frequency mixing module.
Optionally, the second antenna module is connected to the first connection end of the frequency mixing module, specifically: the second antenna module is detachably connected with the first connecting end of the frequency mixing module.
Optionally, the interphone further includes a local oscillation module;
the third connecting end of the frequency mixing module is connected with the local oscillator module;
the local oscillation module is used for generating local oscillation frequency and sending the local oscillation frequency to the frequency mixing module.
Optionally, the frequency mixing module includes a low-pass filtering unit, a band-pass filtering unit, and a frequency mixing unit;
the first connecting end of the frequency mixing module is connected with the input end of the low-pass filtering unit, the output end of the low-pass filtering unit is connected with the input end of the band-pass filtering unit, the output end of the band-pass filtering unit is connected with the input end of the frequency mixing unit, and the output end of the frequency mixing unit is connected with the second connecting end of the frequency mixing module.
Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages: according to the interphone provided by the embodiment of the disclosure, the control module controls the first intermediate frequency filtering module to filter the first signal after frequency mixing output by the frequency mixing module to obtain the satellite cloud picture signal, wherein the signal bandwidth of the first intermediate frequency filtering module is the channel bandwidth of the satellite cloud picture signal, and the image signal processing module performs image signal processing on the satellite cloud picture signal output by the first intermediate frequency filtering module to obtain the satellite cloud picture. The signal bandwidth of the first intermediate frequency filtering module is the channel bandwidth of the satellite cloud picture signal, the satellite cloud picture signal can be completely received, part of the satellite cloud picture signal cannot be lost during intermediate frequency filtering, the complete satellite cloud picture is further obtained through the image signal processing module, and the problem that the satellite cloud picture display effect is poor due to the fact that the interphone cannot receive the complete satellite cloud picture signal is solved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of an intercom in the embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of an intercom in an embodiment of the present disclosure;
FIG. 3 is a block diagram of an image signal processing module according to an embodiment of the disclosure;
FIG. 4 is a block diagram of a DSP unit according to an embodiment of the present disclosure;
FIG. 5 is a block diagram of an image signal processing module according to an embodiment of the disclosure;
FIG. 6 is a schematic structural diagram of an intercom according to an embodiment of the present disclosure;
fig. 7 is a schematic structural diagram of a frequency mixing module in an embodiment of the present disclosure.
Description of reference numerals: the system comprises a 1-first antenna module, a 2-frequency mixing module, a 3-first intermediate frequency filtering module, a 4-control module, a 5-image signal processing module, a 6-second antenna module, a 7-second intermediate frequency filtering module, an 8-audio signal processing module, a 9-amplifying unit, a 10-analog-to-digital conversion unit, an 11-digital signal processing unit, a 12-display unit, a 13-signal strength comparison subunit, a 14-first judgment subunit, a 15-second judgment subunit, a 16-Bluetooth unit, a 17-local oscillator module, an 18-low-pass filtering unit, a 19-band-pass filtering unit and a 20-frequency mixing unit.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are some embodiments of the present disclosure, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
In the embodiment of the present disclosure, as shown in fig. 1, an intercom is provided, including: the device comprises a first antenna module 1, a frequency mixing module 2, a first intermediate frequency filtering module 3, a control module 4 and an image signal processing module 5.
The first antenna module 1 is connected with a first connecting end of the frequency mixing module 2, a second connecting end of the frequency mixing module 2 is connected with an input end of the first intermediate frequency filtering module 3, an output end of the first intermediate frequency filtering module 3 is connected with an input end of the image signal processing module 5, and a control end of the control module 4 is connected with a controlled end of the first intermediate frequency filtering module 3.
The frequency mixing module 2 is used for mixing the satellite cloud image signals received by the first antenna module 1 to obtain first signals after frequency mixing; the first intermediate frequency filtering module 3 is configured to filter the first signal after frequency mixing output by the frequency mixing module 2 under the control of the control module 4 to obtain a satellite cloud picture signal; and the image signal processing module 5 is used for processing the satellite cloud image signals output by the first intermediate frequency filtering module 3 to obtain a satellite cloud image.
The signal bandwidth of the first intermediate frequency filtering module 3 is the channel bandwidth of the satellite cloud picture signal.
The channel bandwidth of the satellite cloud image signal can be 60-300kHz, because the channel bandwidth of the existing interphone is usually 6.25kHz, 12.5kHz, 20kHz or 25kHz, and the channel bandwidth of part of the satellite cloud image signal is about 180kHz, the signal bandwidth of the first intermediate frequency filtering module 3 is set to 60-300kHz, so that the complete satellite cloud image signal can be retained, the satellite cloud image signal is ensured not to be lost, interference signals are filtered, and the satellite cloud image obtained by the image signal processing module 5 is ensured to be more accurate.
In one embodiment, as shown in fig. 2, there is provided an intercom, including: the device comprises a first antenna module 1, a frequency mixing module 2, a first intermediate frequency filtering module 3, a control module 4, an image signal processing module 5, a second antenna module 6, a second intermediate frequency filtering module 7 and an audio signal processing module 8.
The second antenna module 6 is connected with the first connection end of the frequency mixing module 2, the second connection end of the frequency mixing module 2 is connected with the input end of the second intermediate frequency filtering module 7, the output end of the second intermediate frequency filtering module 7 is connected with the input end of the audio signal processing module 8, and the control end of the control module 4 is connected with the controlled end of the second intermediate frequency filtering module 7.
The frequency mixing module 2 is further configured to perform frequency mixing on the intercom signal received by the second antenna module 6 to obtain a second signal after the frequency mixing; the second intermediate frequency filtering module 7 is configured to filter the second frequency-mixed signal output by the frequency mixing module 2 under the control of the control module 4 to obtain an intercom signal; and the audio signal processing module 8 is configured to perform audio signal processing on the interphone signal output by the second intermediate frequency filtering module 7 to obtain a target audio.
The signal bandwidth of the second intermediate frequency filtering module 7 is the channel bandwidth of the interphone signal.
The channel bandwidth of the interphone signal can be 5-30kHz, because the channel bandwidth of the existing interphone is usually 6.25kHz, 12.5kHz, 20kHz or 25kHz, and the channel bandwidth of part of satellite cloud picture signals is about 180kHz, the signal bandwidth of the second intermediate frequency filtering module 7 is set to 5-30kHz, which can retain the complete interphone signal, ensure that the interphone signal is not lost, filter out interference signals, and ensure that the target audio obtained by the audio signal processing module 8 is more accurate.
In one embodiment, the control module 4 is used for controlling the first if filtering module 3 and the second if filtering module 7 to be activated.
The interphone in the embodiment has two working modes, namely a satellite cloud picture working mode and an interphone working mode. The control module 4 is capable of controlling the switching of the two operating modes. The first condition is as follows: when receiving an instruction of a user for receiving a satellite cloud picture signal, the control module 4 controls the first intermediate frequency filtering module 3 to be started, so that the interphone works in a satellite cloud picture working mode. Case two: when receiving an instruction of a user for receiving an interphone signal, the control module 4 controls the second intermediate frequency filtering module 7 to start, so that the interphone works in an interphone working mode. At the same time, the control module 4 controls one of the first intermediate frequency filtering module 3 and the second intermediate frequency filtering module 7 to be activated.
The control module 4 controls the first if filtering module 3 and the second if filtering module 7 to be activated in a variety of ways, including but not limited to the following listed ways:
in a first mode
The control end of the control module 4 outputs a first control signal to control the first intermediate frequency filtering module 3 to start, and the control end of the control module 4 outputs a second control signal to control the second intermediate frequency filtering module 7 to start.
For example: when the control end of the control module 4 outputs a high level, the first intermediate frequency filtering module 3 is controlled to start, and when the control end of the control module 4 outputs a low level, the second intermediate frequency filtering module 7 is controlled to start.
For example: when a user selects a satellite cloud picture working mode through a key on the interphone, namely when the control module 4 receives an instruction of the user for receiving a satellite cloud picture signal, the control end of the control module 4 outputs a high level to control the first intermediate frequency filtering module 3 to start, at the moment, the first intermediate frequency filtering module 3 operates, and the second intermediate frequency filtering module 7 does not operate. When the user selects the working mode of the interphone through the keys on the interphone, namely when the control module 4 receives the command of the user for receiving the interphone signal, the control end of the control module 4 outputs a low level to control the second intermediate frequency filtering module 7 to start, at this moment, the first intermediate frequency filtering module 3 does not operate, and the second intermediate frequency filtering module 7 operates.
Mode two
The control end of the control module 4 comprises a first control end and a second control end, the control end of the control module 4 is connected with the controlled end of the first intermediate frequency filtering module 3, and the control end specifically comprises: a first control end of the control module 4 is connected with a controlled end of the first intermediate frequency filtering module 3; the control end of the control module 4 is connected with the controlled end of the second intermediate frequency filtering module 7, specifically: a second control terminal of the control module 4 is connected to a controlled terminal of the second if filter module 7.
For example: a first control end of the control module 4 outputs a high level to control the first intermediate frequency filtering module 3 to start, and a second control end of the control module 4 outputs a high level to control the second intermediate frequency filtering module 7 to start.
For example: when a user selects the satellite cloud picture working mode through a key on the interphone, namely when the control module 4 receives an instruction of the user for receiving satellite cloud picture signals, the first control end of the control module 4 outputs a high level to control the first intermediate frequency filtering module 3 to start, and the second control end of the control module 4 outputs a low level to control the second intermediate frequency filtering module 7 not to start. At this time, the first if filter module 3 is operated, and the second if filter module 7 is not operated. When the user selects the working mode of the interphone through the keys on the interphone, namely when the control module 4 receives the command of the user for receiving the interphone signal, the first control end of the control module 4 outputs a low level to control the first intermediate frequency filter module 3 not to be started, the second control end of the control module 4 outputs a high level to control the second intermediate frequency filter module 7 to be started, at this moment, the first intermediate frequency filter module 3 is not operated, and the second intermediate frequency filter module 7 is operated.
In one embodiment, as shown in fig. 3, the image signal processing module 5 includes an amplifying unit 9, an analog-to-digital converting unit 10, a digital signal processing unit 11, and a display unit 12.
The amplifying unit 9, the analog-to-digital conversion unit 10, the digital signal processing unit 11 and the display unit 12 are sequentially connected, and the input end of the amplifying unit 9 is connected with the input end of the image signal processing module 5.
Specifically, the output end of the amplifying unit 9 is connected with the input end of the analog-to-digital conversion unit 10, the output end of the analog-to-digital conversion unit 10 is connected with the input end of the digital signal processing unit 11, and the output end of the digital signal processing unit 11 is connected with the input end of the display unit 12.
The amplifying unit 9 is configured to amplify the satellite cloud image signal output by the first intermediate frequency filtering module 3 to obtain an amplified signal; the analog-to-digital conversion unit 10 is configured to perform analog-to-digital conversion on the amplified signal output by the amplification unit 9 to obtain a digital signal; the digital signal processing unit 11 is configured to sequentially encode, check and correct the digital signal output by the analog-to-digital conversion unit 10 to obtain a satellite cloud picture; and the display unit 12 is used for displaying the satellite cloud picture output by the digital signal processing unit 11.
In one embodiment, as shown in fig. 4, the digital signal processing unit 11 includes a signal strength comparison subunit 13, a first decision subunit 14, and a second decision subunit 15.
The input end of the signal strength comparison subunit 13 is connected to the input end of the digital signal processing unit 11, the first output end of the signal strength comparison subunit 13 is connected to the input end of the first decision subunit 14, the second output end of the signal strength comparison subunit 13 is connected to the input end of the second decision subunit 15, the output end of the first decision subunit 14 is connected to the output end of the digital signal processing unit 11, and the output end of the second decision subunit 15 is connected to the output end of the digital signal processing unit 11.
A signal strength comparing subunit 13, configured to compare whether the signal strength of the digital signal output by the analog-to-digital converting unit 10 is greater than a first preset signal strength; the first decision subunit 14 is configured to generate first prompt information when the signal strength of the digital signal is greater than a first preset signal strength, where the first prompt information is used to prompt a user that the direction of the first antenna module is correct; and the second decision subunit 15 is configured to generate second prompt information when the signal strength of the digital signal is not greater than the first preset signal strength, where the second prompt information is used to prompt a user to check whether the first antenna module is connected and whether the direction of the first antenna module is correct.
The first preset signal strength may be an empirical value or a value set by a technician, and when the signal strength of the digital signal is greater than the first preset signal strength, it indicates that the signal strength received by the first antenna module is sufficiently large, and the direction of the first antenna module is correct. When the signal strength of the digital signal is not greater than the first preset signal strength, it indicates that the signal strength received by the first antenna module is small, and it may be that the first antenna module is not connected or the first antenna module is not correctly oriented, so that the signal cannot be sufficiently received.
The first prompt message and the second prompt message can prompt the user whether the first antenna module is connected or not and whether the direction of the first antenna module is correct or not in time, so that the user can know the receiving condition of the signal more, and the use experience of the user is enhanced.
In one embodiment, as shown in fig. 5, the image signal processing module 5 includes an amplifying unit 9, an analog-to-digital converting unit 10, a digital signal processing unit 11, a display unit 12, and a bluetooth unit 16.
The output terminal of the digital signal processing unit 11 is connected to the input terminal of the bluetooth unit 16.
And the bluetooth unit 16 is configured to send the satellite cloud image output by the digital signal processing unit 11 to a bluetooth module of the target device.
The target device is an electronic device with a display screen, and can be a mobile terminal such as a mobile phone and a tablet computer, and can also be wearable devices such as an intelligent bracelet and an intelligent watch. The satellite cloud picture output by the digital signal processing unit 11 is sent to the Bluetooth module of the target device, so that the satellite cloud picture can be checked on the target device, the display effect of the satellite cloud picture can be enhanced, and the satellite cloud picture can be checked by multiple people.
In a specific embodiment, the first antenna module 1 is connected to the first connection end of the frequency mixing module 2, specifically: the first antenna module 1 is detachably connected with the first connection end of the frequency mixing module 2.
The first antenna module 1 is detachably connected with the first connecting end of the frequency mixing module 2, so that the first antenna module 1 can be replaced manually by a user.
In a specific embodiment, the second antenna module 6 is connected to the first connection end of the frequency mixing module 2, specifically: the second antenna module 6 is detachably connected to the first connection terminal of the frequency mixing module 2.
The second antenna module 6 is detachably connected with the first connection end of the frequency mixing module 2, so that the second antenna module 6 can be replaced manually by a user.
When the interphone works in the satellite cloud picture working mode, the first antenna module 1 is used, and when the interphone works in the interphone working mode, the second antenna module 6 is used. The interphone is provided with an antenna interface, and when a user switches between a satellite cloud picture working mode and an interphone working mode, the antenna needs to be replaced manually. Under different working modes, different antennas are used, and signals can be received more accurately.
In a specific embodiment, as shown in fig. 6, there is provided an intercom including: the device comprises a first antenna module 1, a frequency mixing module 2, a first intermediate frequency filtering module 3, a control module 4, an image signal processing module 5 and a local oscillation module 17.
The third connection end of the frequency mixing module 2 is connected with the local oscillator module 17.
And the local oscillation module 17 is configured to generate a local oscillation frequency and send the local oscillation frequency to the frequency mixing module 2.
In a specific embodiment, as shown in fig. 7, the mixing module 2 comprises a low pass filtering unit 18, a band pass filtering unit 19 and a mixing unit 20.
The first connection end of the frequency mixing module 2 is connected with the input end of the low-pass filtering unit 18, the output end of the low-pass filtering unit 18 is connected with the input end of the band-pass filtering unit 19, the output end of the band-pass filtering unit 19 is connected with the input end of the frequency mixing unit 20, and the output end of the frequency mixing unit 20 is connected with the second connection end of the frequency mixing module 2.
The low-pass filter unit 18 is an LC low-pass filter circuit.
The low-pass filtering unit 18 is an LC low-pass filtering circuit, and can perform stray signal separation on the satellite cloud image signal received by the first antenna module 1 to filter out a part of interference signals.
In summary, in the embodiment of the disclosure, the intercom controls the first intermediate frequency filtering module through the control module to filter the first signal after the frequency mixing output by the frequency mixing module, so as to obtain the satellite cloud picture signal, wherein a signal bandwidth of the first intermediate frequency filtering module is a channel bandwidth of the satellite cloud picture signal, and the image signal processing module performs image signal processing on the satellite cloud picture signal output by the first intermediate frequency filtering module, so as to obtain the satellite cloud picture. The signal bandwidth of the first intermediate frequency filtering module is the channel bandwidth of the satellite cloud picture signal, the satellite cloud picture signal can be completely received, part of the satellite cloud picture signal cannot be lost during intermediate frequency filtering, the complete satellite cloud picture is further obtained through the image signal processing module, and the problem that the satellite cloud picture display effect is poor due to the fact that the interphone cannot receive the complete satellite cloud picture signal is solved.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present disclosure, which enable those skilled in the art to understand or practice the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An intercom, comprising: the device comprises a first antenna module, a frequency mixing module, a first intermediate frequency filtering module, a control module and an image signal processing module;
the first antenna module is connected with a first connecting end of the frequency mixing module, a second connecting end of the frequency mixing module is connected with an input end of the first intermediate-frequency filtering module, an output end of the first intermediate-frequency filtering module is connected with an input end of the image signal processing module, and a control end of the control module is connected with a controlled end of the first intermediate-frequency filtering module;
the frequency mixing module is used for mixing the satellite cloud image signals received by the first antenna module to obtain first signals after frequency mixing;
the first intermediate frequency filtering module is used for filtering the first signal after frequency mixing output by the frequency mixing module under the control of the control module to obtain a satellite cloud picture signal;
the image signal processing module is used for processing the satellite cloud picture signal output by the first intermediate frequency filtering module to obtain a satellite cloud picture;
and the signal bandwidth of the first intermediate frequency filtering module is the channel bandwidth of the satellite cloud picture signal.
2. The interphone according to claim 1, further comprising a second antenna module, a second intermediate frequency filtering module and an audio signal processing module;
the second antenna module is connected with the first connecting end of the frequency mixing module, the second connecting end of the frequency mixing module is connected with the input end of the second intermediate frequency filtering module, the output end of the second intermediate frequency filtering module is connected with the input end of the audio signal processing module, and the control end of the control module is connected with the controlled end of the second intermediate frequency filtering module;
the frequency mixing module is further used for mixing the interphone signal received by the second antenna module to obtain a second signal after frequency mixing;
the second intermediate frequency filtering module is used for filtering a second signal after frequency mixing output by the frequency mixing module under the control of the control module to obtain an interphone signal;
the audio signal processing module is used for processing the audio signal of the interphone signal output by the second intermediate frequency filtering module to obtain a target audio;
and the signal bandwidth of the second intermediate frequency filtering module is the channel bandwidth of the interphone signal.
3. The interphone according to claim 2, wherein the control module is used for controlling the first intermediate frequency filtering module and the second intermediate frequency filtering module to start.
4. The interphone of claim 1, wherein the image signal processing module comprises an amplifying unit, an analog-to-digital conversion unit, a digital signal processing unit and a display unit;
the amplifying unit, the analog-to-digital conversion unit, the digital signal processing unit and the display unit are sequentially connected; the input end of the amplifying unit is connected with the input end of the image signal processing module;
the amplifying unit is used for amplifying the satellite cloud picture signal output by the first intermediate frequency filtering module to obtain an amplified signal;
the analog-to-digital conversion unit is used for performing analog-to-digital conversion on the amplified signal output by the amplification unit to obtain a digital signal;
the digital signal processing unit is used for sequentially coding, checking and correcting the digital signals output by the analog-to-digital conversion unit to obtain the satellite cloud picture;
the display unit is used for displaying the satellite cloud picture output by the digital signal processing unit.
5. The interphone according to claim 4, wherein the digital signal processing unit comprises a signal strength comparing subunit, a first judging subunit and a second judging subunit;
the input end of the signal intensity comparison subunit is connected with the input end of the digital signal processing unit; a first output end of the signal strength comparison subunit is connected to an input end of the first decision subunit, and a second output end of the signal strength comparison subunit is connected to an input end of the second decision subunit; the output end of the first judgment subunit is connected with the output end of the digital signal processing unit, and the output end of the second judgment subunit is connected with the output end of the digital signal processing unit;
the signal intensity comparison subunit is used for comparing whether the signal intensity of the digital signal output by the analog-to-digital conversion unit is greater than a first preset signal intensity;
the first decision subunit is configured to generate a first prompt message when the signal strength of the digital signal is greater than the first preset signal strength, where the first prompt message is used to prompt a user that the direction of the first antenna module is correct;
the second decision subunit is configured to generate second prompt information when the signal strength of the digital signal is not greater than the first preset signal strength, where the second prompt information is used to prompt a user to check whether the first antenna module is connected and whether the direction of the first antenna module is correct.
6. The interphone according to claim 4, characterized in that the image signal processing module further comprises a Bluetooth unit;
the output end of the digital signal processing unit is connected with the input end of the Bluetooth unit;
the Bluetooth unit is used for sending the satellite cloud picture output by the digital signal processing unit to a Bluetooth module of target equipment.
7. The intercom of claim 1, wherein the first antenna module is connected to the first connection end of the mixing module, specifically: the first antenna module is detachably connected with the first connecting end of the frequency mixing module.
8. The intercom of claim 2, wherein the second antenna module is connected to the first connection end of the mixing module, specifically: the second antenna module is detachably connected with the first connecting end of the frequency mixing module.
9. The interphone according to claim 1, further comprising a local oscillation module;
the third connecting end of the frequency mixing module is connected with the local oscillator module;
the local oscillation module is used for generating local oscillation frequency and sending the local oscillation frequency to the frequency mixing module.
10. The interphone of claim 1, wherein the mixing module comprises a low pass filtering unit, a band pass filtering unit and a mixing unit;
the first connecting end of the frequency mixing module is connected with the input end of the low-pass filtering unit, the output end of the low-pass filtering unit is connected with the input end of the band-pass filtering unit, the output end of the band-pass filtering unit is connected with the input end of the frequency mixing unit, and the output end of the frequency mixing unit is connected with the second connecting end of the frequency mixing module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110297993.3A CN112953591A (en) | 2021-03-19 | 2021-03-19 | Intercom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110297993.3A CN112953591A (en) | 2021-03-19 | 2021-03-19 | Intercom |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112953591A true CN112953591A (en) | 2021-06-11 |
Family
ID=76227234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110297993.3A Pending CN112953591A (en) | 2021-03-19 | 2021-03-19 | Intercom |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112953591A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008074190A1 (en) * | 2006-12-21 | 2008-06-26 | 3Dsp (Beijing) Limited Corporation | Receiving, transmitting method for bluetooth signal and bluetooth transceiver therein |
| CN201222727Y (en) * | 2007-12-05 | 2009-04-15 | 深圳市力同亚太科技有限公司 | Public frequency band intercommunication equipment with function of transmitting and receiving short message |
| CN103199880A (en) * | 2013-02-28 | 2013-07-10 | 北京国泰半球科技有限公司 | Self-adaptation zero-setting antenna system |
| CN206431885U (en) * | 2017-02-09 | 2017-08-22 | 天津酷雷尔科技有限公司 | Fighter flight simulator and combat simulator system |
| CN111126734A (en) * | 2018-10-31 | 2020-05-08 | 中国能源建设集团广东省电力设计研究院有限公司 | Offshore wind farm dispatching management system |
| CN214480589U (en) * | 2021-03-19 | 2021-10-22 | 广州慧睿思通科技股份有限公司 | Intercom |
-
2021
- 2021-03-19 CN CN202110297993.3A patent/CN112953591A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008074190A1 (en) * | 2006-12-21 | 2008-06-26 | 3Dsp (Beijing) Limited Corporation | Receiving, transmitting method for bluetooth signal and bluetooth transceiver therein |
| CN201222727Y (en) * | 2007-12-05 | 2009-04-15 | 深圳市力同亚太科技有限公司 | Public frequency band intercommunication equipment with function of transmitting and receiving short message |
| CN103199880A (en) * | 2013-02-28 | 2013-07-10 | 北京国泰半球科技有限公司 | Self-adaptation zero-setting antenna system |
| CN206431885U (en) * | 2017-02-09 | 2017-08-22 | 天津酷雷尔科技有限公司 | Fighter flight simulator and combat simulator system |
| CN111126734A (en) * | 2018-10-31 | 2020-05-08 | 中国能源建设集团广东省电力设计研究院有限公司 | Offshore wind farm dispatching management system |
| CN214480589U (en) * | 2021-03-19 | 2021-10-22 | 广州慧睿思通科技股份有限公司 | Intercom |
Non-Patent Citations (1)
| Title |
|---|
| 张怡;: "新一代3D GIS跨区域人影作业系统的应用个例分析", 气象与环境科学, no. 01, 15 February 2013 (2013-02-15) * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2565809A2 (en) | Apparatus and method for managing application in wireless terminal | |
| EP1798569A2 (en) | Method for clocking speed using a wireless terminal and system implementing the same | |
| US11144422B2 (en) | Apparatus and method for controlling external device | |
| US20080254747A1 (en) | Handheld device and communication method | |
| CN105532634A (en) | Ultrasonic wave mosquito repel method, device and system | |
| CN214480589U (en) | Intercom | |
| CN1878291B (en) | Method and apparatus for controlling image data in a wireless terminal | |
| US8060361B2 (en) | Communication device with a function of audio modulation and method for audio modulation | |
| CN112953591A (en) | Intercom | |
| US7966038B2 (en) | Wireless audio transfer system, wireless microphone, audio transmitting apparatus, audio receiving apparatus, image pickup apparatus, recording apparatus, and audio mixer | |
| US8553846B2 (en) | Phone test set modem | |
| CN113645438A (en) | Monitoring equipment, monitoring method and monitoring system | |
| CN204156991U (en) | A kind of law court's executive system with on-site law-enforcing equipment | |
| JP6105341B2 (en) | Information communication system, information communication method, information communication apparatus, and information communication terminal | |
| CN108305638B (en) | Signal processing method, signal processing device and terminal equipment | |
| CN201717871U (en) | Antenna selecting device in TV card module | |
| CN210868080U (en) | Wireless microphone device | |
| JP2003188801A (en) | Mobile phone terminal with videophone function | |
| EP3260883A1 (en) | Apparatus for detecting speeding vehicles | |
| KR20200114659A (en) | Auto fire reporting system for preventing wrong operation | |
| CN204331881U (en) | A kind of information adopts flip flop equipment and the system of card | |
| JP2020064035A (en) | Disaster prevention-capable satellite broadcast television device having rainfall intensity measurement and display function | |
| JP2003189007A (en) | Cellular phone terminal device with tv telephone function | |
| CN213661775U (en) | Meteorological alarm automatic receiver | |
| US10679604B2 (en) | Method and apparatus for transmitting audio |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |