CN110460391A - A kind of ultra wide band ultrasonic body communication device - Google Patents
A kind of ultra wide band ultrasonic body communication device Download PDFInfo
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- CN110460391A CN110460391A CN201910820164.1A CN201910820164A CN110460391A CN 110460391 A CN110460391 A CN 110460391A CN 201910820164 A CN201910820164 A CN 201910820164A CN 110460391 A CN110460391 A CN 110460391A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/0002—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network
- A61B5/0015—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network characterised by features of the telemetry system
- A61B5/0024—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network characterised by features of the telemetry system for multiple sensor units attached to the patient, e.g. using a body or personal area network
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- 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
- H04B1/69—Spread spectrum techniques
- H04B1/713—Spread spectrum techniques using frequency hopping
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- 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
- H04B1/69—Spread spectrum techniques
- H04B1/7163—Spread spectrum techniques using impulse radio
- H04B1/717—Pulse-related aspects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B11/00—Transmission systems employing sonic, ultrasonic or infrasonic waves
Abstract
The present invention proposes communication device in a kind of ultra wide band ultrasonic body, which includes ultrasound emission end, ultrasonic reception end, and the two is communicated in a manner of being wirelessly connected.The present invention is according to the physical characteristic of ultrasonic wave, using ultrashort pulse ultrasonic wave as the carrier of communication on the device that structure is simple, integrated level is high, in conjunction with ultra wide band ultrasonic wave hop-time spread spectrum encoding and decoding technique, internal serious multipath effect can be overcome, realize intra-body communication.Device can realize the multiple functions such as shaping pulse, DA conversion and power amplification using integrated hardware circuit simultaneously, and main control chip realizes the operation of the overwhelming majority such as peripheral equipment control, algorithm process, communication process, both it had saved cost and has also added stability, and can be widely used for the fields such as body area network and tele-medicine.
Description
Technical field
The present invention relates to the technical fields such as ultrasonic wave, ultra-wideband communications, body area network, and in particular to a kind of ultra wide band ultrasonic wave
Human body communication apparatus.
Background technique
In modern medical service, the wireless communication between biological vivo implantation type equipment is to health care and field of biomedicine
With revolutionary meaning.Such as: the pressure sensor for being implanted into eyes can detecte intraocular pressure (IOP), and send out to external device
The early diagnosis and therapy as a result, for glaucoma is surveyed in inspection, prevents patient's vision from losing；In addition diabetic can pass through
Implanted equipment carries out internal glucose monitoring, and information is carried out to pass body surface communication equipment back, in order to which doctor is according to pancreas islet
The reaction administration of element.It can be seen that embedded type device can detect body physiological parameter, equipment detection data it is wireless
Transmission is conducive to the analysis that multidimensional is carried out to human health with comprehensive analysis, to provide precisely treatment foundation.
Existing body area network communication mostly uses electromagnetic wave.However communications carrier of the electromagnetic wave as body area network, have as follows
Insufficient: the spectrum congestion of electromagnetic wave first has a large amount of competition frequency spectrum access device, is easy and the wireless signals such as bluetooth, Wi-Fi
Generate interference；Secondly, the intra-body communication based on electromagnetic wave is easily influenced by periphery electromagnetic environment, reliability is to be improved；In addition,
Electromagnetic wave is subject to eavesdrop, and safety problem causes anxiety；In addition, tissue contains water height (reaching 65%), to the absorptivity of electromagnetic wave
Height, therefore electromagnetic wave is difficult to go deep into human body, it is even more impossible to carry out intra-body communication between equipment；Finally, more histoorgans produce in human body
Raw multipath effect also increases the transmission difficulty of electromagnetic wave in vivo, such as: just at last in the optimum frequency band of human body communication
500-600MHz, signal transmit the region that can only also concentrate on extracorporeal surface 5mm distance.Simultaneously in 2011, world health group
It knits and is referred to electromagnetic wave in the classification of " being potentially carcinogenic to the mankind ".
In contrast, ultrasonic wave is low in the intracorporal absorptivity of people, and periphery electromagnetic environment does not interfere it, therefore ultrasound
Wave is suitable for human body communication relative to electromagnetic wave.Ultrasonic wave also puts into practical application already on clinical medicine, such as: B ultrasound, because
Its safety, it is lossless the features such as be widely used in medical detection, and the past few decades experience have shown that, the ultrasonic wave dispersion in tissue
Heat is smaller, therefore ultrasonic wave is also beneficial to human body in the power bracket of restriction.
However ultrasonic applications are as follows in the Major Difficulties of intra-body communication: first, the inhomogeneities feature of tissue is led
The multipath effect of cause has certain challenge to signal detection and decoding operate；Second, the sonic transmission speed of ultrasonic wave in the tissue
Rate is low, therefore needs to consider the high latency of information transmission in system design.
Jilin University once delivered patent " the ultrasonic communication device under body area network environment " (patent No.:
ZL201520923671.5), emphasis point device build in structure, to the inhomogeneities feature institute of internal channel complexity
The influences such as the serious multipath effect of bring, high latency do not consider.
In modern medical service, various physical signs in human body are the important references marks of human health monitoring and diseases analysis
Standard, and the method that tradition obtains these information need to take considerable time and cost.Therefore it is badly in need of one kind in modern medical service field
Online long-term internal monitoring means, only need to be sitting in family can detect various indicators in vivo safe and efficiently, and transmit
Important data information is provided for the diagnosis of doctor to medical institutions, while can also be provided instead for the linkage of interior therapeutic equipment
The data of feedback, analysis.Such as: patient can simply and efficiently be detected intracorporal various at home by vivo sensing device
Physical signs, such as detection, the young diabetic's bone growth situation of high intraocular pressure (IOP), are then passed by body area network
It is defeated to arrive medical institutions, Toxicity Analysis, in time adjustment therapeutic scheme and the early detection of disease etc. are carried out convenient for doctor.
Summary of the invention
In view of this, it is convenient for health detection and disease early detection in order to obtain internal health indicator whenever and wherever possible, with
And Toxicity Analysis is provided to adjust therapeutic scheme in time for doctor.The present invention provides a kind of communications of ultra wide band ultrasonic body to fill
It sets, according to the physical characteristic of ultrasonic wave, using ultrashort pulse ultrasonic wave as communication on the device that structure is simple, integrated level is high
Carrier overcome internal serious multipath effect, high latency effect in conjunction with the hop-time spread spectrum encoding and decoding technique of ultra wide band ultrasonic wave
A series of transmission difficult points should be waited, realize intra-body communication.It is slightly adjusted additionally by the data sampling sensor of emitting portion,
Present invention application can be extended to the application ranges such as short distance subsurface communication.
The purpose of the present invention is realized at least through one of following technical solution.
A kind of ultra wide band ultrasonic body communication device comprising ultrasound emission end, ultrasonic reception end, the two is wirelessly to connect
The mode connect is communicated；It is responsible for data collection, ultra wide band ultrasonic wave coded modulation, voltage conversion and ultrasonic wave in ultrasound emission end
Transmitting；It is soft that the reception of ultrasonic wave, signal amplification, signal acquisition, ultra wide band ultrasound wave decoder demodulation are responsible in ultrasonic reception end
The display output of part terminal.
Further, the ultrasound emission end includes data acquisition unit, data-reading unit, ultra wide band ultrasonic wave coding
Unit, timing control unit, voltage converter unit, ultrasound emission unit；
For the data acquisition unit outside ultrasound emission end, effect is that intracorporal health indicator letter is acquired by sensor
Breath, is converted to electric signal for health indicator information and electric signal is sent to data-reading unit；
The data-reading unit is controlled inside ultrasound emission end by timing control unit, and effect is that data are acquired list
The electric signal that member sends over is converted to digital signal, and digital signal is stored with setting format；
The ultra wide band ultrasonic wave coding unit is inside ultrasound emission end, by the timing control of ultra wide band ultrasonic wave coding unit
Unit carries out stringent timing control, is responsible for the data for storing data-reading unit and carries out ultra wide band ultrasound coded modulation；
The timing control unit is responsible for generating each list in ultrasound emission end by frequency dividing and frequency multiplication inside ultrasound emission end
The required precision clock source of member；
The voltage converter unit is responsible for the voltage for generating ultra wide band ultrasonic wave coding unit electricity inside ultrasound emission end
Stream signal is converted to the driving signal that can drive ultrasound emission unit and transmits drive signals to ultrasound emission unit；
The ultrasound emission unit, as the transmitting output par, c of ultrasonic wave, is responsible for letter to be launched outside ultrasound emission end
Number impedance matching is carried out, and the signal to be transmitted after matching is converted to by the ultrasonic transducer of ultrasound emission unit by electric energy
Sound can be emitted to ultrasonic reception end by the ultrasonic signal with information.
Further, the code modulation mode of the ultra wide band ultrasonic wave coding unit is to determine to surpass by pseudo noise code
Short pulse appearance position, and judge to realize ultra wide band ultrasonic wave coding with the presence or absence of pulse daley when ultrashort pulse occurs simultaneously
Modulation reduces ultrasonic wave to the fuel factor and mechanical effect of human health, and serious multipath effect in opposed body.
Further, voltage conversion unit can be achieved at the same time the function of shaping pulse, DA conversion and power amplification.
Further, the ultrasonic reception end includes ultrasonic reception unit, signal amplification unit, AD conversion unit, surpasses
Broadband ultrasonic wave decoding unit, timing control unit, serial port unit and PC unit；
For the ultrasonic reception unit outside ultrasonic reception end, what responsible reception ultrasound emission unit launched has information
Ultrasonic signal is simultaneously converted into electric signal, and electric signal is then sent to signal amplification unit；
The signal amplification unit is connected inside ultrasonic reception end with ultrasonic reception unit, is responsible for passing through low noise amplification
Device, which amplifies the electric signal to be come by ultrasonic reception cell translation, to be exported and sends it to AD conversion unit；
The AD conversion unit carries out timing control inside ultrasonic reception end, by timing control unit, is responsible for putting signal
The amplified electric signal of big unit is sampled, and analog signal is accurately converted to digital signal and sends it to ultra wide band
Ultrasonic wave decoding unit；
The ultra wide band ultrasonic wave decoding unit is inside ultrasonic reception end, by the timing control of ultra wide band ultrasonic wave decoding unit
Unit is controlled, and the digital signal for being responsible for exporting AD conversion unit is decoded；Ultra wide band ultrasonic wave decoding unit
Pseudo noise code standard as a comparison is made accurate judgement to pulse position, finally obtains correct decoding result by main control chip
And send it to serial port unit；
The timing control unit is responsible for connecing by a series of frequency dividing and frequency multiplication generation system ultrasound inside ultrasonic reception end
Precision clock source needed for receiving end each unit；
The serial port unit is controlled inside ultrasonic reception end by timing control unit, is responsible for ultra wide band ultrasonic wave solution
The decoding result that code unit obtains is sent to PC unit by serial ports；
The PC unit is responsible for after receiving the decoding result that serial port unit sends over outside ultrasound hair receives, passes through string
Mouth software is patterned display.
Further, the AD conversion unit is made of two A/D chips, carries out timing control by timing control unit
System, can carry out intersection acquisition to the amplified signal of signal amplification unit.
Further, in ultra wide band ultrasonic wave decoding unit, main control chip is by pseudo noise code standard as a comparison, to arteries and veins
It rushes position and makes accurate judgement, to effectively overcome internal serious multipath effect.
The present invention, which mentions, is utilized ultra wide band ultrasonic wave (UsWB, Ultrasonic WideBand) and multiple access technique exists
Intra-body communication is realized on relative simplicity, integrated circuit.Ultra wide band ultrasonic wave is that signal by hop-time spread spectrum sends ultrashort arteries and veins
The technology of ultrasonic wave is rushed, the ultrashort pulse duration is extremely short, generates reflection and scattering effect is limited, low duty ratio can effectively subtract
Few fuel factor and mechanical effect to human health.In addition, extended code is added in when jumping by the present invention, further to support
The influence of anti-multipath.In device realization, the present invention realizes internal supersonic communication using relative simplicity, integrated device, surpasses
Broadband ultrasonic wave coded modulation and decoding demodulation realize that shaping pulse, DA conversion and power amplification collect on main control chip
In realized on electric pressure converter, to simplify the use complexity of ultrasonic transducer, short pulse sampling is handed over using two-way AD
Fork acquisition, improves the accuracy of sampling.Advantage of the invention is that on the device that structure is simple, integrated level is high, using ultra-wide
It is difficult to overcome a series of transmission such as multipath effect, high latency effect that ultrasonic wave transmits in vivo for band ultrasonic wave encoding and decoding technique
Point, at the same device have the characteristics that be conducive to miniaturization, at low cost and stability it is good.
Compared with prior art, communication device in a kind of ultra wide band ultrasonic body of the present invention has following excellent
Point:
1) system apparatus arrangements of the invention are simple, integrated level is high, and wherein shaping pulse can be achieved at the same time in electric pressure converter, DA turns
Change with the multiple functions such as power amplification, and A/D module using intersect acquisition by the way of improve sample rate, main control chip is also realized
The operation of the overwhelming majority such as peripheral equipment control, algorithm process, communication process, both escapable cost also can increase stability.
2) present invention is using ultrasonic wave as the carrier of intra-body communication, and compared to electromagnetic wave, ultrasonic wave has in human body to decline
Reduce, jamproof feature, therefore apparatus of the present invention relative to electromagnetism wave apparatus, more far, more deepen in vivo by transmission range
Enter.
3) present invention uses ultra wide band ultrasonic wave code modulation mode, and ultra wide band ultrasonic signal is sent by hop-time spread spectrum
Ultrashort pulse technology, ultrashort pulse duration generate limited reflection and scattering effect, and low reduce of duty ratio is good for human body
The harmful fuel factor of health and mechanical effect, thus it is safer to human body.
In conclusion the configuration of the present invention is simple, integrated level are high, have that harm to the human body is small, internal biography in communication in vivo
The advantages that defeated distance is remote, ability of anti-multipath is strong, at low cost, easy to use, has a wide range of applications.
Detailed description of the invention
Fig. 1 is the structure chart of communication device in a kind of ultra wide band ultrasonic body described in embodiment；
Fig. 2 is the structure chart of the processing of ultrasound emission end signal described in embodiment；
Fig. 3 is ultra wide band ultrasonic wave coding unit principle explanatory diagram as described in the examples；
Fig. 4 is the structure chart of the processing of ultrasonic reception end signal described in embodiment；
Fig. 5 is ultra wide band ultrasonic wave decoding unit principle explanatory diagram as described in the examples；
Fig. 6 is the flow chart at ultrasound emission end described in embodiment and receiving end signal processing.
Specific embodiment
The technologies such as communication, power electronics and acoustics are organically combined together by the present invention, are passed in vivo according to ultrasonic wave
Defeated advantage realizes the transmission of body area network in human body in conjunction with the characteristics of ultra wide band ultrasound code modulation mode.Below with reference to reality
Example and attached drawing are applied the present invention is described in further detail explanation, embodiments of the present invention are not limited thereto, need to point out
It is that those skilled in the art can refer to prior art understanding if having the process or component of not special detailed description below
Or realize.
Embodiment:
In a kind of ultra wide band ultrasonic body of the present invention communication device structure chart as shown in Figure 1, its by ultrasound emission end,
Two, ultrasonic reception end part forms, and the two is communicated in a manner of being wirelessly connected.Wherein ultrasound emission end passes through sensor
Intracorporal health indicator information (data of physiological index) is acquired to surpass it after main control chip reads health indicator information
Broadband ultrasonic wave coded modulation obtains small voltage low current signal i.e. ultrashort pulse signal, and short pulse signal passes through electric pressure converter
Shaping pulse, DA conversion and power amplification after, by ultrasonic transducer by electric energy be converted to sound can i.e. with information ultrasound
Wave signal is emitted to ultrasonic reception end.
In ultrasonic reception end, the ultrasonic wave with information that ultrasound emission end launches is received by ultrasonic transducer
Signal simultaneously converts thereof into electric signal, and then low-noise amplifier amplifies the electric signal being transformed into, main control chip control
Two-way AD, that is, AD conversion unit, which intersects, acquires amplified electric signal, converts analog signals into digital signal；Main control chip
Digital signal is judged, and restores and obtains signal of the ultrasound emission end after ultra wide band ultrasound coded modulation, is then led
It controls chip and above-mentioned signal is decoded demodulation, and obtained data are passed back into the end PC by serial ports.
As shown in Fig. 2, ultrasound emission end includes data acquisition unit 201, data-reading unit 202, ultra wide band ultrasonic wave
Coding unit 203, timing control unit 204, voltage converter unit 205, ultrasound emission unit 206.
For data acquisition unit 201 outside ultrasound emission end, effect is (to can be existing various lifes by sensor
Manage the sensor of data) the intracorporal health indicator information of acquisition, it is converted into electric signal and electric signal is sent to data and read
Take unit 202；
Data-reading unit 202 is controlled inside ultrasound emission end by timing control unit 204, and effect is to acquire data
The electric signal that unit 201 sends over is converted to digital signal, and by digital signal to store by the format of setting；
Ultra wide band ultrasonic wave coding unit 203 is the core of whole system, inside ultrasound emission end, by timing control unit
204 carry out stringent timing control, are responsible for the data for storing data-reading unit 202 and carry out ultra wide band ultrasound coded modulation,
Its mode is ultrashort pulse appearance position to be determined by pseudo noise code, and judged when ultrashort pulse occurs simultaneously with the presence or absence of arteries and veins
Punching delay, realizes ultra wide band ultrasonic wave coded modulation, reduces fuel factor and mechanical effect to human health, and opposed body
Interior serious multipath effect；Fig. 3 be ultra wide band ultrasonic wave coding unit principle explanatory diagram as described in the examples, frequency pilot sign or
FPGA input signal is after orthogonal coding, then passes through hop-time spread spectrum, then carry out the adjustment (PPM) of pulse position, finally transmits
It is converted to electric pressure converter.
Timing control unit 204 is responsible for generating ultrasound by a series of frequency dividing and frequency multiplication inside ultrasound emission end
Precision clock source needed for each unit in transmitting terminal；
Voltage converter unit 205 can be achieved at the same time shaping pulse, DA conversion and power amplification inside ultrasound emission end
Function is responsible for being converted to the small voltage low current signal that ultra wide band ultrasonic wave coding unit 203 generates that ultrasonic hair can be driven
It penetrates the driving signal of unit 206 and transmits drive signals to ultrasound emission unit 206；
Ultrasound emission unit 206, as the transmitting output par, c of ultrasonic wave, is responsible for signal to be transmitted outside ultrasound emission end
Impedance matching is carried out, and the signal to be transmitted after matching is converted to sound by electric energy by ultrasonic transducer to have information
Ultrasonic signal transmitting goes to ultrasonic reception end.
As shown in figure 4, the ultrasonic reception end includes ultrasonic reception unit 301, signal amplification unit 302, analog-to-digital conversion
Unit 303, ultra wide band ultrasonic wave decoding unit 304, timing control unit 305, serial port unit 306, PC unit 307.
Outside ultrasonic reception end, what responsible reception ultrasound emission unit 206 launched has ultrasonic reception unit 301
The ultrasonic signal of information is simultaneously converted into electric signal, and electric signal is then sent to signal amplification unit 302；
Signal amplification unit 302 is connected inside ultrasonic reception end with ultrasonic reception unit 301, is responsible for passing through low noise
Amplifier by by ultrasonic reception unit 301 it is converted Lai electric signal amplify export and send it to AD conversion unit
303；
AD conversion unit 303 is made of inside ultrasonic reception end two A/D chips, when being carried out by timing control unit 305
Sequence control, is mainly responsible for and carries out intersection acquisition to the amplified signal of signal amplification unit 302, this intersection acquisition mode makes
Sample rate maximizes, and so as to accurately convert analog signals into digital signal, then exports digital signal to ultra wide band
The processing of ultrasonic wave decoding unit 304；
Ultra wide band ultrasonic wave decoding unit 304 is controlled inside ultrasonic reception end by timing control unit 305, and responsible pair
The digital signal that AD conversion unit 303 exports is decoded, and is finally obtained correct decoding result and is sent it to serial ports
Unit 306；As shown in figure 5, pseudo noise code standard as a comparison is made accurate judgement to pulse position by main control chip, thus
Effectively overcome internal serious multipath effect；
Timing control unit 305 generates each list in ultrasonic reception end inside ultrasonic reception end, through a series of frequency dividing and frequency multiplication
The required precision clock source of member；
Serial port unit 306 is controlled inside ultrasonic reception end by timing control unit 305, is responsible for ultra wide band ultrasonic wave
The decoding result that decoding unit 304 obtains is sent to PC unit 307 by serial ports；
After PC unit 307 receives the data of serial port unit 306, shown by serial ports software.
As an example, the process flow of the single unit system of the present embodiment is as shown in Figure 6, the specific steps are as follows:
Step 1, the step of: sensor acquires corresponding data, acquisition include:
Sensor in 1.1 data acquisition units can acquire intracorporal health indicator information, be converted into electric signal and electricity
Signal is sent to data-reading unit.
The electric signal that 1.2 data-reading units can send over data acquisition unit is converted to digital signal, and will
Digital signal stores in a particular format.
Step 2: ultra wide band ultrasonic wave coded modulation being carried out to data, the step of coded modulation includes:
2.1, which control the main control chip in ultra wide band ultrasonic wave coded modulation unit by timing control unit, reads reading data list
The data that member temporarily stores.
2.2 carry out coded modulation by data of the main control chip to reading, and mode is to determine to surpass by pseudo noise code
The position that short pulse occurs in time slot and time slice, and judge to realize when ultrashort pulse occurs with the presence or absence of pulse daley simultaneously
Ultra wide band ultrasonic wave coded modulation.
Step 3: voltage conversion is carried out to the signal after coded modulation, and ultrasonic transducer is driven to emit ultrasonic signal,
Specific method the following steps are included:
The 3.1 small voltage low current signals obtained by ultra wide band ultrasonic wave coded modulation units, by voltage converter unit,
The function of realizing shaping pulse, DA conversion and power amplification simultaneously, is amplified to the driving signal that can motivate ultrasonic transducer.
3.2 send out by the amplified signal of voltage converter unit by the ultrasound for having already passed through impedance matching is input into
It penetrates in unit, which is converted to ultrasonic signal and emitted by ultrasound emission unit.
Step 4: ultrasonic signal is received, receive process the following steps are included:
4.1 ultrasound emission units and ultrasonic reception the unit process that be one opposite, ultrasonic reception unit is by ultrasound emission list
The ultrasonic signal that member launches is converted to electric signal.
4.2 ultrasound emission units will be aligned as far as possible with the ultrasonic transducer in ultrasonic reception unit, such ultrasonic reception list
Member could receive ultrasonic signal to the maximum extent.
Step 5: the electric signal that ultrasonic transducer receives is amplified, detailed process the following steps are included:
All there is energy loss during mechanical energy turns the process and transmission of electric energy in 5.1 ultrasonic reception units, in order to more
Signal is accurately detected, needs to amplify small reception signal by signal amplification unit.
5.2 it is worth noting that, need to consider to put noise when signal amplifier in selection signal amplifying unit
Influence after big, selects low-noise amplifier as far as possible, and the unit after convenience is detected.
Step 6: amplified signal is acquired, realize analog-to-digital conversion, detailed process the following steps are included:
6.1 generate a pair of dephased clock source, and two be fed separately in AD conversion unit by timing control unit
A A/D chip.
6.2 when electric signal is after signal amplification unit amplifies, and AD conversion unit intersects amplified signal
Acquisition accurately captures ultrashort pulse signal.
The multi-clock of 6.3 AD conversion units intersects acquisition mode, makes full use of hardware resource, that is, sample rate can be improved
Cost can be reduced.
Step 7: demodulation is decoded to the signal after sampling, detailed process the following steps are included:
7.1 generate the high-frequency clock after frequency multiplication by timing control unit, supply ultra wide band ultrasound wave decoder demodulating unit, are used for
Accurately, the signal of detection processing ultrashort pulse at high speed.
7.2 ultra wide band ultrasound wave decoder demodulating units handle the digital signal after AD conversion unit, i.e. master control
Pseudo noise code standard as a comparison is made accurate judgement to pulse position, obtains correct decoding result by chip, final to restore
At the signal after ultra wide band ultrasonic wave coded modulation unit coding, it can be observed and be learnt by oscillograph.
Step 8: to decoding demodulation data carry out serial ports transmission, detailed process the following steps are included:
8.1 send PC unit side with serial ports for the data of decoding demodulation by serial port unit.
After 8.2 PC unit sides receive serial data, display is as a result, and be saved in PC sheet in software window
Ground.
Claims (7)
1. a kind of ultra wide band ultrasonic body communication device, which is characterized in that including ultrasound emission end, ultrasonic reception end, the two
It is communicated in a manner of wireless connection；It is responsible for data collection, ultra wide band ultrasonic wave coded modulation, voltage conversion in ultrasound emission end
With the transmitting of ultrasonic wave；It is responsible for the reception of ultrasonic wave, signal amplification, signal acquisition, ultra wide band ultrasound wave decoder in ultrasonic reception end
The display output of demodulation software terminal.
2. a kind of ultra wide band ultrasonic body communication device according to claim 1, which is characterized in that the ultrasound emission
End includes data acquisition unit, data-reading unit, ultra wide band ultrasonic wave coding unit, timing control unit, electric pressure converter
Unit, ultrasound emission unit；
For the data acquisition unit outside ultrasound emission end, effect is that intracorporal health indicator letter is acquired by sensor
Breath, is converted to electric signal for health indicator information and electric signal is sent to data-reading unit；
The data-reading unit is controlled inside ultrasound emission end by timing control unit, and effect is that data are acquired list
The electric signal that member sends over is converted to digital signal, and digital signal is stored with setting format；
The ultra wide band ultrasonic wave coding unit is inside ultrasound emission end, by the timing control of ultra wide band ultrasonic wave coding unit
Unit carries out stringent timing control, is responsible for the data for storing data-reading unit and carries out ultra wide band ultrasound coded modulation；
The timing control unit is responsible for generating each list in ultrasound emission end by frequency dividing and frequency multiplication inside ultrasound emission end
The required precision clock source of member；
The voltage converter unit is responsible for the voltage for generating ultra wide band ultrasonic wave coding unit electricity inside ultrasound emission end
Stream signal is converted to the driving signal that can drive ultrasound emission unit and transmits drive signals to ultrasound emission unit；
The ultrasound emission unit, as the transmitting output par, c of ultrasonic wave, is responsible for letter to be launched outside ultrasound emission end
Number impedance matching is carried out, and the signal to be transmitted after matching is converted to by the ultrasonic transducer of ultrasound emission unit by electric energy
Sound can be emitted to ultrasonic reception end by the ultrasonic signal with information.
3. a kind of ultra wide band ultrasonic body communication device according to claim 2, which is characterized in that the ultra wide band is super
The code modulation mode of acoustic coded unit is ultrashort pulse appearance position to be determined by pseudo noise code, and judge simultaneously ultrashort
It whether there is pulse daley when pulse occurs, realize ultra wide band ultrasonic wave coded modulation, reduce ultrasonic wave to human health
Fuel factor and mechanical effect, and serious multipath effect in opposed body.
4. a kind of ultra wide band ultrasonic body communication device according to claim 2, which is characterized in that voltage conversion is single
Member can be achieved at the same time the function of shaping pulse, DA conversion and power amplification.
5. a kind of ultra wide band ultrasonic body communication device according to claim 1, which is characterized in that the ultrasonic reception
End includes ultrasonic reception unit, signal amplification unit, AD conversion unit, ultra wide band ultrasonic wave decoding unit, timing control list
Member, serial port unit and PC unit；
For the ultrasonic reception unit outside ultrasonic reception end, what responsible reception ultrasound emission unit launched has information
Ultrasonic signal is simultaneously converted into electric signal, and electric signal is then sent to signal amplification unit；
The signal amplification unit is connected inside ultrasonic reception end with ultrasonic reception unit, is responsible for passing through low noise amplification
Device, which amplifies the electric signal to be come by ultrasonic reception cell translation, to be exported and sends it to AD conversion unit；
The AD conversion unit carries out timing control inside ultrasonic reception end, by timing control unit, is responsible for putting signal
The amplified electric signal of big unit is sampled, and analog signal is accurately converted to digital signal and sends it to ultra wide band
Ultrasonic wave decoding unit；
The ultra wide band ultrasonic wave decoding unit is inside ultrasonic reception end, by the timing control of ultra wide band ultrasonic wave decoding unit
Unit is controlled, and the digital signal for being responsible for exporting AD conversion unit is decoded；Ultra wide band ultrasonic wave decoding unit
Pseudo noise code standard as a comparison is made accurate judgement to pulse position, finally obtains correct decoding result by main control chip
And send it to serial port unit；
The timing control unit is responsible for connecing by a series of frequency dividing and frequency multiplication generation system ultrasound inside ultrasonic reception end
Precision clock source needed for receiving end each unit；
The serial port unit is controlled inside ultrasonic reception end by timing control unit, is responsible for ultra wide band ultrasonic wave solution
The decoding result that code unit obtains is sent to PC unit by serial ports；
The PC unit is responsible for after receiving the decoding result that serial port unit sends over outside ultrasound hair receives, passes through string
Mouth software is patterned display.
6. a kind of ultra wide band ultrasonic body communication device according to claim 5, which is characterized in that the analog-to-digital conversion
Unit, is made of two A/D chips, carries out timing control by timing control unit, can be to the amplified signal of signal amplification unit
Carry out intersection acquisition.
7. a kind of ultra wide band ultrasonic body communication device according to claim 5, which is characterized in that in ultra wide band ultrasound
In wave decoder unit, pseudo noise code standard as a comparison is made accurate judgement to pulse position, thus effective gram by main control chip
Take serious multipath effect in vivo.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021115305A1 (en) * | 2019-12-09 | 2021-06-17 | 明格(上海)信息技术有限公司 | Method and system for processing received ultrasonic data, and computer readable medium |
| CN113676263A (en) * | 2021-08-10 | 2021-11-19 | 华南理工大学 | Human body internal communication device and method based on ultrasonic backscattering |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060036169A1 (en) * | 2004-07-13 | 2006-02-16 | Fuji Photo Film Co., Ltd. | Ultrasonic transmitting and receiving apparatus |
| CN103654861A (en) * | 2013-11-19 | 2014-03-26 | 深圳京柏医疗设备有限公司 | Ultrasonic umbilical cord blood flow measuring system and ultrasonic umbilical cord blood flow measuring method both based on pseudorandom codes |
| CN104807894A (en) * | 2015-04-22 | 2015-07-29 | 长江大学 | Pseudo-random coding ultrasonic driving system and method |
| US20170279571A1 (en) * | 2015-01-07 | 2017-09-28 | Northeastern University | Ultrasonic Multiplexing Network for Implantable Medical Devices |
| CN108289259A (en) * | 2018-03-28 | 2018-07-17 | 华南理工大学 | The concealed earphone implementation method and device of the energy communication technology are taken based on ultrasonic wireless |
| CN110166142A (en) * | 2019-03-13 | 2019-08-23 | 华南理工大学 | A kind of method of rate control for realizing internal ultrasonic communication based on spread spectrum |
-
2019
- 2019-08-31 CN CN201910820164.1A patent/CN110460391A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060036169A1 (en) * | 2004-07-13 | 2006-02-16 | Fuji Photo Film Co., Ltd. | Ultrasonic transmitting and receiving apparatus |
| CN103654861A (en) * | 2013-11-19 | 2014-03-26 | 深圳京柏医疗设备有限公司 | Ultrasonic umbilical cord blood flow measuring system and ultrasonic umbilical cord blood flow measuring method both based on pseudorandom codes |
| US20170279571A1 (en) * | 2015-01-07 | 2017-09-28 | Northeastern University | Ultrasonic Multiplexing Network for Implantable Medical Devices |
| CN104807894A (en) * | 2015-04-22 | 2015-07-29 | 长江大学 | Pseudo-random coding ultrasonic driving system and method |
| CN108289259A (en) * | 2018-03-28 | 2018-07-17 | 华南理工大学 | The concealed earphone implementation method and device of the energy communication technology are taken based on ultrasonic wireless |
| CN110166142A (en) * | 2019-03-13 | 2019-08-23 | 华南理工大学 | A kind of method of rate control for realizing internal ultrasonic communication based on spread spectrum |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021115305A1 (en) * | 2019-12-09 | 2021-06-17 | 明格(上海)信息技术有限公司 | Method and system for processing received ultrasonic data, and computer readable medium |
| CN113676263A (en) * | 2021-08-10 | 2021-11-19 | 华南理工大学 | Human body internal communication device and method based on ultrasonic backscattering |
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Application publication date: 20191115 |