CN210225432U - Communication device - Google Patents
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- CN210225432U CN210225432U CN201921564877.8U CN201921564877U CN210225432U CN 210225432 U CN210225432 U CN 210225432U CN 201921564877 U CN201921564877 U CN 201921564877U CN 210225432 U CN210225432 U CN 210225432U
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Abstract
The utility model particularly relates to a communication device; a communication device, comprising: a hydrophone for receiving the hydroacoustic signal; the wake-up detection circuit is connected with the hydrophone and is used for detecting whether the underwater sound signal sent by the hydrophone is a specific underwater sound signal; the wake-up signal generator is connected with the wake-up detection circuit and is used for generating a wake-up signal after the underwater sound signal is detected to be the specific underwater sound signal; the processor comprises a wake-up module, the wake-up module continuously works when the communication equipment is in a dormant state, the wake-up module is connected with the wake-up signal generator, and the wake-up module is used for receiving the wake-up signal and awakening the dormant communication equipment after receiving the wake-up signal.
Description
Technical Field
The utility model relates to an underwater communication technical field, concretely relates to communication equipment.
Background
Communication equipment used in underwater environment is powered by a battery except communication equipment arranged at the shore, under a large floating platform or under a ship, such as an underwater movable vehicle or underwater fixed equipment. In addition, since the release and recovery costs of the marine equipment are very high, the longer the underwater equipment can work in water, the greater the profit and the greater the applicable range. This is in addition to the fact that the underwater communication rate is physically characterized by high delay, low rate, and very high power consumption (typically tens of watts to hundreds of watts) in underwater acoustic data transmission. Many underwater communication devices typically require communication once every few days or even months.
Under the premise, the underwater communication equipment enters the sleep mode when not working and is in a low power consumption state, so that the power saving is a very economic function (for example, the power of the underwater communication equipment is about 1 watt when the underwater communication equipment normally works, and if the underwater communication equipment enters the sleep mode, the power is reduced by hundreds of times to several milliwatts).
The communication device in the sleep mode needs to be woken up to work normally.
SUMMERY OF THE UTILITY MODEL
In order to solve the above technical problem, the present invention provides a communication device capable of waking up when sleeping.
In order to achieve the above technical problem, an embodiment of the present application provides a communication device, including:
a hydrophone for receiving the hydroacoustic signal;
the wake-up detection circuit is connected with the hydrophone and is used for detecting whether the underwater sound signal sent by the hydrophone is a specific underwater sound signal;
the wake-up signal generator is connected with the wake-up detection circuit and is used for generating a wake-up signal after the underwater sound signal is detected to be the specific underwater sound signal;
the processor comprises a wake-up module, the wake-up module continuously works when the communication equipment is in a dormant state, the wake-up module is connected with the wake-up signal generator, and the wake-up module is used for receiving the wake-up signal and awakening the dormant communication equipment after receiving the wake-up signal.
In one embodiment, the wake-up module is further configured to ignore the wake-up signal when the communication device is not asleep or after the communication device wakes up.
In one embodiment, the processor further comprises a trigger detection module, the trigger detection module being connected to the hydrophone, the trigger detection module being configured to:
receiving the underwater sound signal sent by the hydrophone when the communication equipment is not dormant;
acquiring a trigger head signal of the underwater acoustic signal;
calculating the trigger head signal and a preset trigger head signal according to a preset rule;
judging whether the operation result exceeds a preset threshold value or not;
and if the operation result exceeds the preset threshold, confirming that the triggering is successful.
In one embodiment, the wake-up detection circuit includes an identifier and at least one acquisition circuit, each of the acquisition circuits is configured to acquire a signal of a specific frequency on the underwater acoustic signal, and the identifier is configured to detect whether the underwater acoustic signal is the specific underwater acoustic signal by comparing the signal of the specific frequency acquired by the acquisition circuit with a preset frequency signal to determine whether the signal is consistent.
In one embodiment, each of the acquisition circuits includes a filter and a sampler;
the filter is connected with the hydrophone and used for acquiring signals of a specific frequency band in the underwater acoustic signals;
the sampler is connected with the filter and used for collecting signals with specific frequency in the signals with the specific frequency band;
the identifier is respectively connected with the sampler and the wake-up signal generator, and is used for receiving the signal with the specific frequency and comparing whether the signal with the specific frequency is the same as a frequency signal with a preset frequency,
and if the signal with the specific frequency is the same as the preset frequency signal, the underwater sound signal is the specific underwater sound signal.
In one embodiment, the number of the acquisition circuits is multiple, the signals of specific frequencies of the underwater acoustic signal acquired by the multiple acquisition circuits are different, and the multiple acquisition circuits are further configured to respectively perform corresponding time delay on the corresponding signals of specific frequencies so that the signals of the specific frequencies simultaneously arrive at the identifier.
In one embodiment, the acquisition circuits further comprise time delays connected in series between the samplers and the discriminators, and each of the acquisition circuits delays the signal of the corresponding specific frequency by the corresponding time delay.
In one embodiment, the identifier is an and gate.
In one embodiment, the wake-up signal generator is a transducer.
In one embodiment, the wake-up module is an interrupt input pin with an oscillator.
The utility model has the advantages that:
the communication equipment provided by the application is provided with the hydrophone, the awakening detection circuit, the awakening signal generator and the processor, wherein the processor comprises the awakening module, and the awakening module continuously works when the communication equipment is in dormancy. After the hydrophone receives the underwater sound signal, the wake-up detection circuit detects whether the underwater sound signal is a specific underwater sound signal. And after the underwater sound signal is detected to be the specific underwater sound signal, the wake-up signal generator generates a wake-up signal and sends the wake-up signal to a wake-up module of the processor. The wake-up module receives the wake-up signal and wakes up the dormant communication device after receiving the wake-up signal.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the 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 labor.
FIG. 1 is a schematic diagram of a communication device in one embodiment of the present application;
wherein, the corresponding relation between the reference numbers and the part names in fig. 1 is as follows:
10. a hydrophone; 20. a wake-up detection circuit; 21. an identifier; 22. an acquisition circuit 221, a filter; 222. a sampler; 223. a time delay; 30. a wake-up signal generator; 40. a processor; 41. a wake-up module; 42. and triggering the detection module.
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, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The application provides a communication device for underwater use. Due to the underwater communication requirement, when the communication equipment does not need communication, the communication equipment can be dormant to enter a low power consumption mode, and the electric quantity is saved.
When communication is required, the communication device needs to be awakened to perform communication. Further, the present application provides a communication device that can wake up from a sleep state.
Referring to fig. 1, in one embodiment, the present application provides a communication device comprising:
a hydrophone 10 for receiving the underwater acoustic signal;
the wake-up detection circuit 20 is connected to the hydrophone 10, and the wake-up detection circuit 20 is configured to detect whether an underwater acoustic signal sent by the hydrophone 10 is a specific underwater acoustic signal;
a wake-up signal generator 30 connected to the wake-up detection circuit 20, the wake-up signal generator 30 being configured to generate a wake-up signal after detecting that the underwater acoustic signal is a specific underwater acoustic signal;
the processor 40 includes a wake-up module 41, the wake-up module 41 continuously operates when the communication device is in a sleep state, the wake-up module 41 is connected to the wake-up signal generator 30, and the wake-up module 41 is configured to receive the wake-up signal and wake up the sleeping communication device after receiving the wake-up signal.
The underwater acoustic signal carries at least one data packet, and the communication device needs to unpack (demodulate and decode) the data packet after receiving the data packet to realize information transmission, namely communication.
Under water, many underwater acoustic signals transmitted by a plurality of communication devices propagate, and the hydrophone 10 receives many underwater acoustic signals, but not all the received underwater acoustic signals are target receiving signals to be communicated. When a non-target receiving signal which does not need to be communicated is received, the communication equipment does not need to be awakened.
When the underwater sound signal is received, it is necessary to first determine whether the underwater sound signal is a target receiving signal that needs to be communicated, that is, a specific underwater sound signal. If it is a specific underwater sound signal, the communication device is awakened again. After the communication equipment is awakened, the data packet carried by the underwater sound signal is released, so that the information transmission, namely the communication is realized.
The number of processors 40 is one or more. In the present embodiment, the number of processors 40 is two, and the processors are respectively a DSP processor 40 and an ARM processor 40.
In this embodiment, the wake-up module 41 is an interrupt input pin with an oscillator.
Further, the processor 40 also includes an operating system, software programs, and memory. The operating system and software programs may be stored in memory.
When the communication equipment is dormant, the operating system and the software program are frozen, the frozen states of the operating system and the software program are stored in the memory, and the memory is set to be automatically refreshed.
When the communication equipment is awakened, the operating system and the software program are restored to the frozen state according to the frozen state of the operating system and the software program stored in the memory, and then the operating system and the software program are operated from the frozen state.
In one embodiment, the wake-up module 41 is further configured to ignore the wake-up signal when the communication device is not asleep or after the communication device wakes up.
In one embodiment, the processor 40 further includes a trigger detection module 42, the trigger detection module 42 being coupled to the hydrophone 10, the trigger detection module 42 being configured to:
receiving an underwater sound signal sent by the hydrophone 10 when the communication equipment is not dormant;
acquiring a trigger head signal of an underwater acoustic signal;
calculating the trigger head signal and a preset trigger head signal according to a preset rule;
judging whether the operation result exceeds a preset threshold value or not;
if the operation result exceeds the preset threshold, the triggering is confirmed to be successful, so that information transmission (data transmission) is carried out subsequently.
The underwater sound signal carries at least one data packet, and the foremost part of each data packet is the trigger head signal. Whether the data packet is received or not is judged by monitoring whether a trigger head signal (a data packet trigger head) arrives or not.
In one embodiment, the wake-up detection circuit 20 includes an identifier 21 and at least one acquisition circuit 22, each acquisition circuit 22 is configured to acquire a signal with a specific frequency on the underwater sound signal, and the identifier 21 is configured to detect whether the underwater sound signal is the specific underwater sound signal by comparing the signal with the specific frequency acquired by the acquisition circuit 22 with a preset frequency signal.
The obtaining circuit 22 may only obtain one signal with a specific frequency from the underwater acoustic signal, and detect the signal with the specific frequency to determine whether the underwater acoustic signal is the specific underwater acoustic signal, that is, detect only one feature of the underwater acoustic signal to determine whether the underwater acoustic signal is the specific underwater acoustic signal, where the detection accuracy is lower. The more features of the hydroacoustic signal are detected, the higher the detection accuracy.
The identifier 21 determines whether or not the underwater sound signal is a specific underwater sound signal by comparing a signal of a specific frequency acquired from the underwater sound signal with a preset specific frequency signal to determine whether or not the underwater sound signal is a specific underwater sound signal.
When there are a plurality of acquisition circuits 22, and a plurality of signals with specific frequencies are acquired from the underwater acoustic signal, the identifier 21 detects that each signal with specific frequency acquired from the underwater acoustic signal meets the requirement, that is, is consistent with a preset signal, and then determines that the underwater acoustic signal is a specific underwater acoustic signal.
In one embodiment, each acquisition circuit 22 includes a filter 221 and a sampler 222.
The filter 221 is connected to the hydrophone 10, and the filter 221 is used for acquiring signals of a specific frequency band in the underwater acoustic signal.
The sampler 222 is connected to the filter 221, and the sampler 222 is used for collecting a signal of a specific frequency in the signal of a specific frequency band.
The identifier 21 is connected to the sampler 222 and the wake-up signal generator 30, respectively, the identifier 21 is configured to receive the signal with the specific frequency and compare whether the signal with the specific frequency is the same as the frequency signal with the preset frequency,
and if the signal with the specific frequency is the same as the preset frequency signal, the underwater sound signal is the specific underwater sound signal.
The signals of the specific frequency band are set and adjusted according to requirements, and similarly, the signals of the specific frequency can also be set and adjusted according to requirements.
In one embodiment, the number of the acquisition circuits 22 is multiple, the signals of specific frequencies of the underwater acoustic signals acquired by the multiple acquisition circuits 22 are different, and the multiple acquisition circuits 22 are further configured to respectively perform corresponding time delays on the corresponding signals of specific frequencies so that the signals of multiple specific frequencies simultaneously reach the identifier 21.
The signals of the specific frequencies of the underwater acoustic signals acquired by the plurality of acquisition circuits 22 are different, that is, the time sequences of the signals of the specific frequencies of the underwater acoustic signals acquired by the plurality of acquisition circuits 22 are different. Since the plurality of acquisition circuits 22 respectively acquire the signals with the specific frequencies in chronological order, it is further necessary to delay the signal with the specific frequency acquired first for a longer time so that the signal with the specific frequency acquired later can arrive at the identifier 21 at the same time for the identifier 21 to detect.
And delaying the signal of the specific frequency corresponding to the acquisition time difference of the signals of the specific frequencies by a corresponding time length.
In one embodiment, the obtaining circuits 22 further include a time delay 223, the time delay 223 is connected in series between the sampler 222 and the identifier 21, and each obtaining circuit 22 delays the signal of the corresponding specific frequency by the corresponding time delay 223.
Instead of each acquisition circuit 22 being provided with a delay 223, the corresponding acquisition circuit 22 may not be provided with a delay 223 in the event that a delay is not required.
In one embodiment, the identifier 21 is an and gate (and logic).
In one embodiment, there are three acquisition circuits 22, and the three acquisition circuits 22 are respectively used for acquiring signals of three different specific frequencies of the underwater sound signal. The identifier 21 is a three-input and gate.
In the present embodiment, the filters 221 of the three acquisition circuits 22 are band pass filters of 16KHz + -3%, 22KHz + -3% and 28KHz + -3%, respectively, and the samplers 222 of the three acquisition circuits 22 are samplers 222 of 16KHz, 22KHz and 28KHz, respectively. The delayers 223 of two of the obtaining circuits 22 are respectively used for delaying 20ms and 10ms, and the other obtaining circuit 22 is not provided with the delayer 223, i.e. the obtaining circuit 22 does not need to delay, i.e. delay 0 ms.
In one embodiment, the wake-up signal generator 30 is a transducer.
In one embodiment, the wake-up signal is formed by splicing a plurality of signals with specific frequencies and a preset blank interval.
The detailed working principle and process of the communication device provided by the embodiment of the application are as follows:
when the communication device is dormant, the hydrophone 10 receives an underwater sound signal and transmits the underwater sound signal to the filters 221 of the plurality of acquisition circuits 22, the filters 221 of the plurality of acquisition circuits 22 respectively acquire corresponding signals of a specific frequency band, the collector acquires a signal of a specific frequency from the signals of the specific frequency band, the delayer 223 delays the signal of the specific frequency so that the signals of the specific frequency acquired by the plurality of acquisition circuits 22 can reach the identifier 21 at the same time, and when the signals of the specific frequency acquired by the three acquisition circuits 22 all meet requirements, the identifier 21 judges that the underwater sound signal is the specific underwater sound signal.
When the identifier 21 determines that the underwater sound signal is a specific underwater sound signal, the wake-up signal generator 30 combines the signals with specific frequencies acquired by the plurality of acquisition circuits 22 and a preset blank interval to form a wake-up signal, and the wake-up signal generator 30 transmits the wake-up signal to the wake-up module 41 of the processor 40.
The wake-up module 41 of the processor 40 wakes up the communication device, i.e. wakes up the operating system and the software program, upon receiving the wake-up signal. After the operating system and the software program are awakened, the software program can awaken a clock, external equipment, a power supply and the like, so that the communication equipment can perform subsequent operation and realize communication.
After the communication device is awakened or when the communication device is not dormant, the awakening module 41 ignores the awakening signal, the trigger detection module 42 receives the underwater sound signal sent by the hydrophone 10, acquires the trigger head signal, and then calculates the acquired trigger head signal and the preset trigger head signal according to a preset rule to determine whether the calculation result exceeds a preset threshold value. If the operation result exceeds the preset threshold, the successful triggering is confirmed, namely the data packet is found, so that the subsequent operations of demodulating, decoding and the like are carried out on the data packet, and the information transmission is realized.
The communication device provided by the present application is provided with a hydrophone 10, a wake-up detection circuit 20, a wake-up signal generator 30 and a processor 40, wherein the processor 40 further includes a wake-up module 41, and the wake-up module 41 continuously operates when the communication device is in a sleep state. After the hydrophone 10 receives the underwater sound signal, the wake-up detection circuit 20 detects whether the underwater sound signal is a specific underwater sound signal. Upon detecting that the underwater sound signal is a specific underwater sound signal, the wake-up signal generator 30 generates a wake-up signal and transmits the wake-up signal to the wake-up module 41 of the processor 40. The wake-up module 41 receives the wake-up signal and wakes up the sleeping communication device upon receiving the wake-up signal.
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 is merely a detailed description of the invention that enables those skilled in the art to understand or implement the invention. 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 invention. Thus, the present invention 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. A communication device, comprising:
a hydrophone for receiving the hydroacoustic signal;
the wake-up detection circuit is connected with the hydrophone and is used for detecting whether the underwater sound signal sent by the hydrophone is a specific underwater sound signal;
the wake-up signal generator is connected with the wake-up detection circuit and is used for generating a wake-up signal after the underwater sound signal is detected to be the specific underwater sound signal;
the processor comprises a wake-up module, the wake-up module continuously works when the communication equipment is in a dormant state, the wake-up module is connected with the wake-up signal generator, and the wake-up module is used for receiving the wake-up signal and awakening the dormant communication equipment after receiving the wake-up signal.
2. The communications device of claim 1, wherein the wake-up module is further configured to ignore the wake-up signal when the communications device is not asleep or after the communications device wakes up.
3. The communication device of claim 1, wherein the processor further comprises a trigger detection module coupled to the hydrophone, the trigger detection module configured to:
receiving the underwater sound signal sent by the hydrophone when the communication equipment is not dormant;
acquiring a trigger head signal of the underwater acoustic signal;
calculating the trigger head signal and a preset trigger head signal according to a preset rule;
judging whether the operation result exceeds a preset threshold value or not;
and if the operation result exceeds the preset threshold, confirming that the triggering is successful.
4. The communication device according to claim 1, wherein the wake-up detection circuit comprises an identifier and at least one acquisition circuit, each acquisition circuit is configured to acquire a signal with a specific frequency on the underwater acoustic signal, and the identifier is configured to detect whether the underwater acoustic signal is a specific underwater acoustic signal by comparing the signal with the specific frequency acquired by the acquisition circuit with a preset frequency signal for consistency.
5. The communication device of claim 4, wherein each of the acquisition circuits comprises a filter and a sampler;
the filter is connected with the hydrophone and used for acquiring signals of a specific frequency band in the underwater acoustic signals;
the sampler is connected with the filter and used for collecting signals with specific frequency in the signals with the specific frequency band;
the identifier is respectively connected with the sampler and the wake-up signal generator, and is used for receiving the signal with the specific frequency and comparing whether the signal with the specific frequency is the same as a frequency signal with a preset frequency,
and if the signal with the specific frequency is the same as the preset frequency signal, the underwater sound signal is the specific underwater sound signal.
6. The apparatus according to claim 5, wherein the plurality of acquisition circuits acquire different signals of specific frequencies of the underwater acoustic signal, and the plurality of acquisition circuits are further configured to respectively delay the corresponding signals of specific frequencies so that the signals of specific frequencies arrive at the identifier at the same time.
7. The communication device of claim 6, wherein the acquisition circuits further comprise time delays, the time delays being connected in series between the sampler and the identifier, each of the acquisition circuits delaying a signal of a corresponding specific frequency by a corresponding time delay.
8. The communication device of claim 4, wherein the identifier is an AND gate.
9. The communication device of claim 1, wherein the wake-up signal generator is a transducer.
10. The communication device of claim 1, wherein the wake-up module is an interrupt input pin with an oscillator.
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| CN201921564877.8U CN210225432U (en) | 2019-09-17 | 2019-09-17 | Communication device |
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| CN201921564877.8U CN210225432U (en) | 2019-09-17 | 2019-09-17 | Communication device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110581770A (en) * | 2019-09-17 | 2019-12-17 | 深圳市智慧海洋科技有限公司 | communication device and communication device wake-up method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110581770A (en) * | 2019-09-17 | 2019-12-17 | 深圳市智慧海洋科技有限公司 | communication device and communication device wake-up method |
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Address after: B1203-1204, Shenzhen national engineering laboratory building, 20 Gaoxin South 7th Road, Gaoxin community, Yuehai street, Nanshan District, Shenzhen, Guangdong 518000 Patentee after: SMART OCEAN TECHNOLOGY Co.,Ltd. Address before: Room 01, 11th floor, Sanhang science and technology building, Northwest University of technology, Gaoxin South 9th Road, Yuehai street, Nanshan District, Shenzhen, Guangdong 518000 Patentee before: SMART OCEAN TECHNOLOGY Co.,Ltd. |